WO2006001376A1 - 内視鏡 - Google Patents
内視鏡 Download PDFInfo
- Publication number
- WO2006001376A1 WO2006001376A1 PCT/JP2005/011633 JP2005011633W WO2006001376A1 WO 2006001376 A1 WO2006001376 A1 WO 2006001376A1 JP 2005011633 W JP2005011633 W JP 2005011633W WO 2006001376 A1 WO2006001376 A1 WO 2006001376A1
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- WO
- WIPO (PCT)
- Prior art keywords
- channel
- tube
- treatment instrument
- channel tube
- endoscope
- Prior art date
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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
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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
- A61B1/00002—Operational features of endoscopes
- A61B1/00011—Operational features of endoscopes characterised by signal transmission
- A61B1/00018—Operational features of endoscopes characterised by signal transmission using electrical cables
-
- 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
- A61B1/05—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 characterised by the image sensor, e.g. camera, being in the distal end portion
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/18—Shielding or protection of sensors from environmental influences, e.g. protection from mechanical damage
- A61B2562/182—Electrical shielding, e.g. using a Faraday cage
Definitions
- the present invention has an imaging device such as a CCD that captures an endoscopic image and a treatment instrument communication channel, and a high-frequency treatment is performed by a high-frequency treatment instrument that is inserted into the treatment instrument communication channel. Relates to an endoscope.
- an imaging device such as a CCD that captures an endoscopic image and a treatment instrument communication channel, and a high-frequency treatment is performed by a high-frequency treatment instrument that is inserted into the treatment instrument communication channel. Relates to an endoscope.
- an imaging device such as a CCD is incorporated at the distal end of an insertion portion that is inserted into a lumen, and an endoscope image is captured by this imaging device.
- the endoscope is provided with a signal cable for transmitting a signal output from the image sensor.
- This signal cable is connected to an external camera control unit (CCU).
- This CCU is connected to display means such as a monitor.
- the endoscopic image captured by the image sensor is converted into an electrical signal, transmitted to the ecu via the signal cable, and displayed on the monitor.
- a forceps channel (treatment tool penetration channel) is disposed in the insertion portion of the endoscope.
- a high-frequency treatment instrument is inserted into the forceps channel.
- a high-frequency treatment instrument is inserted into the body through the forceps channel, and high-frequency treatment is performed in the body!
- Patent Document 1 shows a configuration in which an insertion portion of an endoscope or a net tube in which a metal wire is knitted in a net shape is attached to an outer sheath of a universal cable. ing. This reduces unnecessary radiation noise radiated from the electronic endoscope and prevents noise radiated from other external electronic devices from entering the electronic endoscope.
- Patent Document 2 a metal foil such as aluminum is wrapped around the outer peripheral surface of a channel tube of a forceps channel disposed in an insertion portion of an endoscope, and a copper foil is wound thereon. The structure which provided the metal vapor deposition film which vapor-deposited such metals is shown.
- Patent Document 3 describes a signal connected to an operation unit of an endoscope.
- An imaging cable which is a cable, is wrapped with a two-layer shielded wire to prevent external electrical equipment from electromagnetic interference.
- unnecessary radiation noise radiated from the electronic endoscope can be reduced, and noise radiated from other external electronic devices can be prevented from entering the electronic endoscope.
- an electronic endoscope having a forceps channel having the above-described conventional configuration when used in combination with a high-frequency treatment instrument inserted into the forceps channel, the electronic endoscope is connected to the CCD by an electromagnetic field generated around the high-frequency treatment instrument. Crosstalk occurs in the connected cable. As a result, the endoscope image displayed on the monitor may be disturbed by noise emitted from the high-frequency treatment instrument passed through the forceps channel.
- the present invention has been made paying attention to the above circumstances, and its purpose is to reduce disturbance of an observation image of an endoscope due to noise generated from a high-frequency treatment instrument passed through a treatment instrument insertion channel of an insertion portion. It is another object of the present invention to provide an endoscope that suppresses the large diameter of the insertion portion and does not impair flexibility.
- the endoscope according to the first aspect of the present invention has a distal end portion and a proximal end portion, an insertion portion to be inserted into a lumen, and a treatment tool disposed in the insertion portion.
- Permeable treatment tool Provided in the distal end portion of the insertion portion, the imaging portion for taking an image of the subject, converting the image of the taken subject into an electrical signal, and outputting the electrical signal, and the treatment instrument perforation channel.
- an electromagnetic shielding means for suppressing the noise from being mixed into an electric signal output from the imaging unit when a treatment tool inserted into the communication channel generates noise.
- An endoscope has a distal end portion and a proximal end portion, an insertion portion to be inserted into a lumen, and a treatment tool disposed in the insertion portion.
- a channel tube that constitutes a permeable treatment device through channel, an imaging unit that is provided at the distal end of the insertion unit, images the subject, converts the captured subject image into an electrical signal, and outputs the electrical signal; And a metal part provided on the channel tube, wherein the metal part is connected to a ground on the circuit.
- the insertion portion is provided with a bending portion that bends in response to an operation by a user
- the metal portion is a metal coil member provided in a portion corresponding to the bending portion of the channel tube.
- a metal film provided at a location other than the portion corresponding to the curved portion of the channel tube, and the coil member and the metal film may be electrically connected.
- the imaging unit may include an observation optical system and an imaging device, and an imaging cable connected to the imaging device may be inserted through the insertion unit.
- the channel tube may include a tube base formed of a resin material, and the metal film may be formed of a plating film.
- the channel tube includes a tube base material formed of a resin material, and the metal film is formed on a film formation layer in which a plurality of types of metals are sequentially formed and on an outermost skin of the film formation layer. And an outermost film-forming layer formed of at least one of gold and nickel.
- FIG. 1 is a schematic configuration diagram of an entire endoscope system showing a first embodiment of the present invention.
- FIG. 2A is a longitudinal sectional view showing the internal configuration of the insertion portion of the endoscope according to the first embodiment. It is.
- FIG. 2B is a longitudinal sectional view of an essential part showing the configuration of the metal film of the outer skin of the channel tube of the endoscope according to the first embodiment.
- FIG. 3 is a longitudinal sectional view showing a schematic configuration of the inside of the distal end portion of the insertion portion of the endoscope according to the first embodiment.
- FIG. 4 is a schematic configuration diagram of a main part showing a connection state of an earth circuit of an endoscope according to a second embodiment of the present invention.
- FIG. 5 is a longitudinal sectional view showing an internal configuration of an insertion portion of an endoscope according to a third embodiment of the present invention.
- Fig. 6 is a longitudinal sectional view of an essential part showing a connecting portion between a coil member and a metal film of an endoscope according to a third embodiment.
- Fig. 7 is a longitudinal sectional view of an essential part showing a first modification of a connection portion between a coil member and a metal film of an endoscope according to a third embodiment.
- Fig. 8 is a longitudinal sectional view of an essential part showing a second modified example of the connection portion between the coil member and the metal film of the endoscope of the third embodiment.
- FIG. 9 is a longitudinal sectional view showing the internal configuration of the insertion portion of the endoscope according to the fourth embodiment of the present invention.
- FIG. 10 is a longitudinal sectional view showing an internal configuration of an insertion portion of an endoscope according to a fifth embodiment of the present invention.
- FIG. 11A is a longitudinal sectional view showing an internal configuration of an insertion portion of an endoscope according to a sixth embodiment of the present invention.
- FIG. 11B is a perspective view showing a ground connection part of the endoscope according to the sixth embodiment.
- FIG. 1 shows a schematic configuration of the entire system of the electronic endoscope (video scope) 1 according to the present embodiment.
- the system of the electronic endoscope 1 includes an electronic endoscope 1, a light source device 2, and a video processor 3. And a monitor 4.
- a monitor 4 is connected to the video processor 3.
- the electronic endoscope 1 has an elongated insertion portion 5 that is inserted into the lumen, and an operation portion 6 that is connected to the proximal end portion of the insertion portion 5.
- the insertion portion 5 is provided with an elongated flexible tube portion (snake tube) 7 having flexibility.
- the base end portion of the flexible tube portion 7 is connected to the operation portion 6.
- a hard tip rigid portion 8 is disposed at the most distal end of the insertion portion 5.
- a bending portion 9 is interposed between the proximal end portion of the distal end rigid portion 8 and the distal end portion of the flexible tube portion 7.
- the distal end rigid portion 8 is provided with at least an observation portion 10, a distal end opening portion 11a of the treatment instrument penetration channel 11, and an illuminating portion (not shown). Further, the distal end rigid portion 8 is provided with a distal end frame 12.
- the distal end frame 12 is provided with an observation part mounting hole 12a, a treatment tool penetration channel hole 12b, and an illumination hole (not shown).
- the observation unit 10 is provided with an objective lens unit 13 incorporating an objective lens group 13a.
- the objective lens unit 13 is connected to a field lens 200 and a CCD holding frame 14 that holds a CCD (imaging device) 15.
- a CCD 15 is disposed at the rear end of the CCD holding frame 14. This CCD 15 is arranged at the image forming position of the objective lens group 13a.
- the CCD holding frame 14 is inserted into the observation unit mounting hole 12a of the distal end frame 12 and is fixed in a liquid-tight manner with an adhesive or the like.
- an illumination unit incorporating an illumination lens of an illumination optical system, a light guide fiber, or the like is attached to the illumination hole of the distal end frame 12. And it is liquid-tightly fixed to the end frame 12 in the same manner with an adhesive or the like.
- the treatment instrument penetration channel 11 is formed by an elongated elongated channel tube (tubular member) 16 having flexibility.
- the channel tube 16 is made of a resin material such as PTFE.
- the distal end portion of the channel tube 16 is liquid-tightly fixed with an adhesive or the like in a state where the distal end portion of the channel tube 16 is inserted into the treatment instrument penetration channel hole 12b of the distal end frame 12.
- a plurality of bending pieces are arranged in parallel in the axial direction of the insertion portion 5 in the bending portion 9 of the insertion portion 5. Both front and rear ends of each bending piece are connected to each other so as to be rotatable. Further, a flexible bending tube 17 is disposed on the outer peripheral surface of the bending portion 9.
- the bending portion 9 can be operated by remote control from the hand side, for example, in the four directions of front and rear, left and right, or 2 It is possible to bend in each direction.
- an imaging cable 18, a channel tube 16, a light guide fiber for illumination (not shown), an operation wire for bending operation, and the like are arranged inside the bending portion 9 and the flexible tube portion 7 of the insertion portion 5. It is installed. The tip of the imaging cable 18 is connected to the CCD 15. Further, the distal end portion of the operation wire is fixed to the bending piece at the foremost position of the bending portion 9. In addition, the proximal ends of the imaging cable 18, the channel tube 16, the light guide fiber, and the operation wire are extended to the operation unit 6 side.
- the operation unit 6 is provided with a channel base 19 which is a forceps opening and a bending operation lever 20. As shown in FIG. 2A, the base end portion of the channel tube 16 is connected to the inner end portion of the channel cap 19. As a result, the treatment instrument such as the high-frequency treatment instrument 21 inserted from the channel base 19 is guided to the distal end side of the insertion portion 5 through the treatment instrument piercing channel 11, and protrudes to the outside from the distal end opening 11a. It is summer.
- the bending operation lever 20 is connected to a bending operation mechanism (not shown) incorporated in the operation unit 6. A base end portion of an operation wire is connected to the bending operation mechanism. Then, by operating the bending operation lever 20, the operation wire is pulled through the bending operation mechanism, and the bending portion 9 is remotely bent in the operation direction of the bending operation lever 20.
- the universal cable 22 is provided with a connector (not shown) that is detachably connected to the light source device 2 and an electrical connector (not shown) that is detachably connected to the video processor 3. Then, the illumination light emitted from the light source device 2 is sent to an illumination unit (not shown) of the distal end rigid portion 8 via a light guide fiber (not shown), and the illumination light is emitted from here.
- the proximal end portion of the imaging cable 18 is also connected to an electrical connector (not shown) through the internal force of the operation unit 6 through the universal cable 22.
- the endoscopic image (subject image) formed by the objective lens group 13a of the observation unit 10 is captured by the CCD 15, and the captured subject image is converted into an electrical signal.
- the electrical signal output from the CCD 15 is sent to the video processor 3 via the imaging cable 18 and processed for image processing. Endoscopic image is displayed on monitor 4! /
- the channel tube 16 of the present embodiment is a conductive film having conductivity on the outer peripheral surface of the tube base material 23 formed of a resin material such as PTFE.
- the metal film is formed as a single layer to form the outer skin 24.
- the tube base material 23 may be another polymer other than PTFE, such as a resin material, such as FEP, butyl chloride, PET, polyamide, or polyimide.
- the metal film is a portion running in parallel with the tube base material 23 or the imaging cable 18 in the flexible tube portion 7 (the flexible tube on the proximal side of the flexible tube portion 7 from the portion where the CCD is disposed). Provided in Part 7).
- a metal such as copper, chromium, nickel, and titanium is formed by a CVD method, a sputtering method, a vapor deposition method, a plating method, or the like.
- a method for measuring the metal film of the outer skin 24 there are vapor deposition, sputtering, ion plating, CVD and the like as dry methods. There are also wet plating and painting (conductive paint).
- a lead wire 25 is connected to the metal film of the outer skin 24 of the channel tube 16.
- the other end of the lead wire 25 is connected to the ground (inside of the video processor 3) via an earth circuit 37 that is provided in the video processor 3 and includes a capacitor 34, a resistor 35, and a coil 36. GND) and electromagnetic shielding means 27 are formed.
- the CCD holding frame 14 of the objective lens unit 13 of the observation unit 10 is formed using an aluminum member that has been subjected to non-conductive alumite treatment.
- a non-conductive alumite-treated aluminum member is also used for the frame member 15a that holds the CCD15.
- the high-frequency treatment instrument 21 when used, an electromagnetic field is generated around the high-frequency treatment instrument 21.
- the metal film of the outer skin 24 of the channel tube 16 is connected to the earth circuit 26 via the lead wire 25, and therefore the ground of the earth circuit 26 is around the high-frequency treatment device 21. Suppresses the generated electromagnetic field from being mixed into the output signal from the CCD15. As a result, it is possible to reduce the occurrence of crosstalk in the imaging cable 18 connected to the CCD 15 due to the electromagnetic field generated around the high-frequency treatment instrument 21, so that the image of the endoscopic image displayed on the monitor 14 is disturbed. Can be further reduced.
- the configuration described above has the following effects. That is, in the channel tube 16 of the electronic endoscope 1 of the present embodiment, the outer skin 24 is formed by forming a metal film on the outer peripheral surface of the tube base material 23, so that the high-frequency treatment tool passed through the channel tube 16. Resistant to powerful noise. For this reason, it is possible to suppress the disturbance of the observation image of the endoscope 1 due to the mixing of noise from the high frequency treatment tool 21 passed through the treatment tool penetration channel 11 of the insertion portion 5.
- the outer skin 24 of the channel tube 16 is formed by forming a metal film on the outer peripheral surface of the tube base material 23, the thickness of the entire channel tube 16 is not likely to be particularly large. Therefore, the outer diameter of the insertion portion 5 does not increase, and the flexibility of the insertion portion 5 is not impaired.
- the CCD holding frame 14 of the objective lens unit 13 of the observation unit 10 and the frame member 15a for holding the CCD 15 are formed using an aluminum member that has been subjected to non-conductive alumite treatment. ing. Therefore, for example, even in an electronic endoscope 1 used in perfusate or physiological saline, it is possible to prevent high-frequency leakage current transmitted through the perfusate from flowing into the CCD 15 via the CCD holding frame 14 of the objective lens unit 13. .
- the objective lens unit 13 is made of a ceramic non-conductive material by using a non-conductive alumite-treated aluminum member CCD holding frame 14 or a CCD 15 frame member 15a. If the diameter of the electronic endoscope 1 is increased as in the case of providing an insulating member, the ceramic becomes thinner and can be prevented from cracking during processing and assembly of the insulating member.
- a metal film is formed as a single layer on the outer peripheral surface of the tube base 23 made of a resin material, and an outer skin 24 is formed.
- the outer peripheral surface of the channel tube 16 may be covered with a conductive mesh wire such as copper or stainless steel, and this mesh wire may be connected to the ground inside the endoscope 1.
- the configuration in which the outer skin 24 is formed by forming a metal film on the entire outer peripheral surface of the tube base 23 of the channel tube 16 is shown.
- the metal film of the outer skin 24 is formed.
- a spiral masking member may be used to form the spiral outer skin 24.
- the shape of the metal film of the outer skin 24 can be variously modified such as a mesh shape or a lattice shape, which is not limited to the above embodiment. In this case, the flexibility of the channel tube 16 can be further ensured.
- FIG. 4 shows a second embodiment of the present invention.
- the configuration of the channel tube 16 of the first embodiment is changed as follows.
- the outer peripheral surface of the tube base material 23 of the channel tube 16 has a conductive mesh wire such as copper or stainless steel, aluminum, etc., as in the first embodiment.
- the resin layer 32 is formed on the outer layer of the intermediate layer 31 formed of a conductive metal film such as nickel, copper, or gold.
- the intermediate layer 31 of the present embodiment is a single-layer metal film as in the first embodiment, or a channel channel instead.
- a configuration in which the outer peripheral surface of the tube 16 is covered with a conductive mesh wire such as copper or stainless steel is also acceptable!
- ground wire 33 is connected to the metal film of intermediate layer 31 of the present embodiment.
- the other end of the ground wire 33 is connected to the ground inside the video processor 3 through a ground circuit 37 including a capacitor 34, a resistor 35, and a coil 36.
- the metal film of the intermediate layer 31 of the channel tube 16 is electrically connected to the ground inside the video processor 3, so that noise from the high-frequency treatment instrument 21 inserted into the channel tube 16 is mixed into the imaging cable 18.
- the electromagnetic shielding means 38 for reducing the crosstalk and reducing the crosstalk is formed.
- the configuration described above has the following effects. That is, in the present embodiment, the conductive coating of the metal film of the intermediate layer 31 of the channel tube 16 and the mesh wire are connected to the ground inside the endoscope 1, so that the intermediate layer 31 of the channel tube 16 Conductive coatings and nets on metal films are also ground. Therefore, the ground of the intermediate layer 3 1 of the channel tube 16 blocks the electromagnetic field generated around the high-frequency treatment instrument 21, thereby suppressing crosstalk to the imaging cable 18 connected to the CCD 15. It is possible to suppress the disturbance of the displayed endoscopic image.
- the resin layer 32 is formed on the outer layer of the intermediate layer 31 of the channel tube 16, peeling or cracking of the conductive film of the intermediate layer 31 may be prevented. it can. Thereby, disconnection of the conductive coating of the intermediate layer 31 can be prevented, and the shielding effect of the electromagnetic field generated around the high-frequency treatment instrument 21 can be stably maintained.
- FIGS. 5 and 6 show a third embodiment of the present invention.
- the configuration of the channel tube 16 of the first embodiment is changed as follows.
- a metal film is formed on the outer peripheral surface portion of the tube base 23 other than the curved portion 9 at the distal end portion of the channel tube 16 to form the outer skin 41. Further, as shown in FIG. 6, a metal film is not formed on the curved portion 9, and a coil member 42 made of metal, for example, stainless steel is provided. Metal of this coil member 42 and outer skin 41 The membrane is electrically connected by direct connection.
- one end of a lead wire 25 is connected to the metal film of the outer skin 41 of the channel tube 16 as in the first embodiment.
- the other end of the lead wire 25 is connected to a ground circuit 37 provided in the video processor 3 (shown in FIG. 3).
- the electromagnetic shielding means 27 is formed which reduces the mixing of noise from the high-frequency treatment instrument 21 passed through the channel tube 16 into the imaging cable 18 and reduces crosstalk.
- the outer skin 41 and the coil member 42 on the outer peripheral surface of the channel tube 16 are connected to the ground inside the endoscope 1, the outer skin 41 and the coil member 42 of the channel tube 16 are also included. Become ground. Therefore, the crosstalk to the imaging cable 18 connected to the CCD 15 is reduced by the action of the outer sheath 41 of the channel tube 16 and the ground of the coil member 42 to block the electromagnetic field generated around the high-frequency treatment instrument 21. In addition, the endoscopic image displayed on the monitor 4 can be prevented from being disturbed.
- a metal film is formed on the outer peripheral surface portion of the tube base 23 other than the curved portion 9 at the tip portion of the channel tube 16 to form the outer skin 41, and this curved portion.
- a stainless steel coil member 42 is fitted to the portion 9. Therefore, it is economical because it is not necessary to form a film on the curved portion 9. Further, even when the bending portion 9 is bent, the shielding film does not deteriorate because the metal film of the outer skin 41 is not peeled off at the bending portion 9.
- FIG. 7 shows a first modification of the connection portion between the coil member 42 of the endoscope 1 and the metal film of the outer skin 41 of the third embodiment (see FIGS. 5 and 6).
- a conductive adhesive (an adhesive containing carbon or silver powder) 43 is provided at a connection portion between the coil member 42 and the metal film of the outer skin 41, and the coil member 42 is connected via the conductive adhesive 43. This is a connection between the outer skin 41 and the metal film.
- FIG. 8 shows a second modification of the connection portion between the coil member 42 of the endoscope 1 and the metal film of the outer skin 41 of the third embodiment (see FIGS. 5 and 6).
- a lead wire 44 is provided at a connection portion between the coil member 42 and the metal film of the outer skin 41, and the coil member 42 and the metal film of the outer skin 41 are connected via the lead wire 44. is there.
- the first and second modified examples are economical because it is not necessary to form a film on the bending portion 9, as in the third embodiment. Even when the bending portion 9 is operated to bend, the metal film of the outer skin 41 is not peeled off at the portion of the bending portion 9, so that the shielding performance is not lowered, which is effective.
- FIG. 9 shows a fourth embodiment of the present invention.
- the configuration of the channel tube 16 in the endoscope 1 of the first embodiment is changed as follows.
- the base layer 51 is provided on the outer peripheral surface of the tube base material 23 of the channel tube 16.
- the underlayer 51 is made of, for example, titanium, chromium, or DLC (diamond-like carbon).
- This underlayer 51 is prepared by subjecting the outer peripheral surface of the tube base material 23 to a pretreatment such as tetraetch, solid sodium method, atmospheric plasma, hydrophilization treatment, primer spraying, CVD method, sputtering method, vapor deposition method, plating, etc.
- the film is formed by the above.
- a shield layer 52 is provided on the outer peripheral surface of the base layer 51.
- the shield layer 52 is formed, for example, by depositing a metal such as copper, chromium, nickel, or titanium by a CVD method, a sputtering method, a vapor deposition method, a plating method, or the like.
- a surface layer 53 is provided on the outer peripheral surface of the shield layer 52.
- the surface layer 53 is formed, for example, by depositing a metal such as gold, nickel, or chromium by a CVD method, a sputtering method, a vapor deposition method, a mesh, or the like.
- the surface layer 53 is set to at least one film-deposited layer of gold or nickel that improves solder wettability.
- the base layer 51 on the outer peripheral surface of the tube base 23 of the channel tube 16 the shield layer 52 on the outer peripheral surface of the base layer 51, and the surface layer 53 on the outer peripheral surface of the shield layer 52.
- the outer layer of the channel tube 16 is formed by the laminated body 54 in which and are sequentially laminated.
- the configuration described above has the following effects. That is, in this embodiment, chromium is formed on the underlayer 51 and sputtering with high film formation energy is used, so that the adhesion between the outer peripheral surface of the tube base material 23 of the channel tube 16 and the underlayer 51 is increased. Can be increased. In addition, since the shield layer 52 is formed on the outer peripheral surface of the base layer 51, the electromagnetic wave shielding characteristic can be imparted to the tube base material 23 such as the PTFE tube of the channel tube 16.
- solder wettability of the channel tube 16 can be enhanced by at least one of the gold and nickel film forming layers of the outermost surface layer 53 of the channel tube 16 in particular.
- the surface layer 53 may be set as at least one of a film-forming layer of gold, nickel, or stainless steel that improves chemical resistance.
- the chemical resistance of the channel tube 16 can be enhanced by at least one layer of gold, titanium, or chromium formed on the outermost surface layer 53 of the channel tube 16. Therefore, deterioration of the channel tube 16 due to washing, disinfection, and sterilization can be prevented.
- FIG. 10 shows a fifth embodiment of the present invention.
- a metal film is formed on the outer peripheral surface of the imaging cable 18 connected to the CCD 15 to form an outer skin 61 that functions as a shield.
- the other parts have the same configuration as the endoscope 1 of the first embodiment, and the same parts as those of the endoscope 1 of the first embodiment are denoted by the same reference numerals. Then, the explanation is omitted.
- a lead wire 62 is connected to the metal film of the outer skin 61.
- the other end of the lead wire 62 is connected to a ground circuit 26 (see FIG. 3) disposed in the operation unit 6.
- an electromagnetic shield means 63 is formed that reduces crosstalk to the imaging cable 18 due to noise coming from the high-frequency treatment instrument 21 passed through the channel tube 16 by being electrically connected to the ground inside the endoscope 1. It has been.
- the configuration described above has the following effects. That is, in this embodiment Since the film formation layer is formed on the outer skin 61 of the imaging cable 18 and functions as a shield, the disturbance of the image of the endoscope 1 can be reduced by the noise emitted from the high-frequency treatment tool 21. Furthermore, in the present embodiment, the outer skin 61 of the imaging cable 18 is made to function as a shield, so that it is also effective against noise coming from the imaging cable 18.
- the metal film of the outer skin 61 of the imaging cable 18 does not necessarily need to be formed over the entire length of the imaging cable 18, and at least the channel tube in the curved portion 9 of the insertion portion 5 and the flexible tube portion 7 are provided. It may be configured to be provided only in a portion of the range arranged close to 16.
- FIGS. 5 and 6 show a sixth embodiment of the present invention.
- the configuration of the channel tube 16 of the third embodiment is changed as follows.
- a metal film is not formed on the outer skin of the channel tube 16, and a metal, for example, stainless steel coil member 71 is provided. .
- the coil member 71 extends over the entire area of the channel tube 16 formed by only the curved portion 9.
- An earth connection component 72 made of a metal spring material is attached to an end of the coil member 71 on the operation unit 6 side.
- the ground connection part 72 has a coil connection part 73 in which one side of a cylinder is cut out.
- the coil connection portion 73 is mounted in a state of being fitted on the coil member 71 and is attached so as to tighten the coil member 71.
- a linear terminal 74 is provided at one end of the coil connection portion 73.
- a ground wire 25 is soldered to the terminal 74.
- the coil member 71 is electrically connected to the ground via the ground connection part 72, the ground wire 25, and the ground circuit 37 of the video processor 3. That is, the electromagnetic shielding means 27 is formed around the channel tube 16.
- the coil member 71 is configured to tighten the channel tube 16. That is, the coil member 71 prevents the channel 16 from buckling.
- the objective lens unit 13 of the observation unit 10 holds the objective lens 13c.
- a lens frame 130b made of an insulating material such as grease or ceramic that holds the objective lens group 13a other than the objective lens 13c.
- the lens frame 130b is connected to a CCD holding frame 14 that holds the CCD 15.
- the coil member 71 on the outer peripheral surface of the channel tube 16 is connected to the ground, the coil member 71 blocks the electromagnetic field generated around the high-frequency treatment instrument 21.
- crosstalk to the imaging cable 18 connected to the CCD 15 can be reduced, and disturbance of the endoscopic image displayed on the monitor 4 can be reduced.
- this embodiment is economical because it is not necessary to form a metal film on the outer peripheral surface of the channel tube 16. Further, since the coil member 71 is wound over the entire length of the channel tube 16, the channel tube 16 is unlikely to buckle. Therefore, the channel tube can be made thinner, and the insertion portion can be made thinner.
- the lens frame 130b that holds a part of the objective lens unit 13, that is, the objective lens group 13a other than the objective lens 13c, is made of an insulating material, the insulation with the objective lens frame 130a on the distal end side is reinforced. That is, it is possible to more effectively prevent high-frequency leakage current transmitted through the perfusate from flowing into the CCD 15 through the lens frame of the objective lens unit 13.
- the present invention relates to a technical field for manufacturing and using an endoscope in which an endoscope image is picked up by an imaging element such as a CCD and a high-frequency treatment instrument is inserted into a treatment instrument insertion channel. It is effective in.
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Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/571,193 US20080051634A1 (en) | 2004-06-24 | 2005-06-24 | Endoscope |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-186349 | 2004-06-24 | ||
JP2004186349A JP2006006529A (ja) | 2004-06-24 | 2004-06-24 | 内視鏡 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006001376A1 true WO2006001376A1 (ja) | 2006-01-05 |
Family
ID=35774403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/011633 WO2006001376A1 (ja) | 2004-06-24 | 2005-06-24 | 内視鏡 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20080051634A1 (ja) |
JP (1) | JP2006006529A (ja) |
WO (1) | WO2006001376A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011504654A (ja) * | 2007-11-21 | 2011-02-10 | ケンブリッジ ディスプレイ テクノロジー リミテッド | 発光デバイスおよびそのための材料 |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2638841B1 (en) * | 2011-09-05 | 2015-07-22 | Olympus Medical Systems Corp. | Endoscope |
CN103491845B (zh) * | 2011-12-07 | 2016-05-04 | 奥林巴斯株式会社 | 电子内窥镜 |
WO2013101901A1 (en) * | 2011-12-29 | 2013-07-04 | Cook Medical Technologies Llc | Space-optimized visualization catheter having a camera train holder in a catheter with off-centered lumens |
JP5830421B2 (ja) * | 2012-03-23 | 2015-12-09 | オリンパス株式会社 | 内視鏡 |
JP5490328B1 (ja) * | 2012-08-09 | 2014-05-14 | オリンパスメディカルシステムズ株式会社 | 電子内視鏡装置 |
EP4327722A2 (en) | 2012-10-23 | 2024-02-28 | Boston Scientific Scimed, Inc. | Signal transmission components for use with medical devices |
WO2014136311A1 (ja) * | 2013-03-05 | 2014-09-12 | オリンパスメディカルシステムズ株式会社 | 内視鏡 |
JP5711438B1 (ja) * | 2013-06-21 | 2015-04-30 | オリンパスメディカルシステムズ株式会社 | 内視鏡用撮像ユニット及び内視鏡装置 |
WO2015015942A1 (ja) * | 2013-07-29 | 2015-02-05 | オリンパスメディカルシステムズ株式会社 | 内視鏡 |
DE102013217500A1 (de) * | 2013-09-03 | 2015-03-05 | Olympus Winter & Ibe Gmbh | Endoskop und Endoskopspitze |
DE102014210281A1 (de) * | 2014-05-30 | 2015-12-03 | Digital Endoscopy Gmbh | Rohrelement für ein endoskop, endoskop mit diesem und herstellverfahren für ein rohrelement |
US10702128B2 (en) * | 2014-07-02 | 2020-07-07 | Xenocor, Inc. | Medical borescopes and related tip assemblies |
EP3177226B1 (en) * | 2014-08-06 | 2018-09-26 | Cook Medical Technologies LLC | Thin-film coated fluoropolymer catheter |
CN106999014B (zh) * | 2015-06-18 | 2019-01-11 | 奥林巴斯株式会社 | 内窥镜 |
JP2017209215A (ja) * | 2016-05-24 | 2017-11-30 | Hoya株式会社 | 電子内視鏡システム |
JP6792966B2 (ja) * | 2016-06-22 | 2020-12-02 | Hoya株式会社 | 電子内視鏡装置用の接続構造 |
JP7110083B2 (ja) * | 2018-12-18 | 2022-08-01 | 富士フイルム株式会社 | 内視鏡、処置具挿通路の破損検出方法、及び処置具挿通路の破損検出プログラム |
JP7178100B2 (ja) * | 2019-11-25 | 2022-11-25 | 株式会社藤林商会 | アスベスト含有塗膜除去装置 |
US11707182B2 (en) * | 2021-03-24 | 2023-07-25 | PacificMD Biotech, LLC | Endoscope and endoscope sheath with diagnostic and therapeutic interfaces |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61249459A (ja) * | 1985-04-30 | 1986-11-06 | 富士写真光機株式会社 | 内視鏡およびこの内視鏡を用いた電気メス装置 |
JPH01140906U (ja) * | 1988-03-24 | 1989-09-27 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3792418A (en) * | 1971-09-03 | 1974-02-12 | Bunker Ramo | Electrical connector |
US3999955A (en) * | 1975-07-15 | 1976-12-28 | Allegheny Ludlum Industries, Inc. | Strip for lead frames |
JPS58141135A (ja) * | 1981-10-20 | 1983-08-22 | 富士写真フイルム株式会社 | 固体イメ−ジセンサを用いた内視鏡の画像伝送方式 |
US4514586A (en) * | 1982-08-30 | 1985-04-30 | Enthone, Inc. | Method of using a shielding means to attenuate electromagnetic radiation in the radio frequency range |
JPS6365840A (ja) * | 1986-04-04 | 1988-03-24 | オリンパス光学工業株式会社 | 内視鏡 |
US4751110A (en) * | 1986-07-14 | 1988-06-14 | Shipley Company Inc. | Radiation attenuation shielding |
US4759346A (en) * | 1987-02-17 | 1988-07-26 | Olympus Optical Co., Ltd. | Endoscope device |
JPS63270024A (ja) * | 1987-04-27 | 1988-11-08 | Olympus Optical Co Ltd | 電子内視鏡装置 |
US20030120197A1 (en) * | 2001-05-28 | 2003-06-26 | Takashi Kaneko | Composite material for medical applications, tube for medical applications and medical instrument |
-
2004
- 2004-06-24 JP JP2004186349A patent/JP2006006529A/ja active Pending
-
2005
- 2005-06-24 US US11/571,193 patent/US20080051634A1/en not_active Abandoned
- 2005-06-24 WO PCT/JP2005/011633 patent/WO2006001376A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61249459A (ja) * | 1985-04-30 | 1986-11-06 | 富士写真光機株式会社 | 内視鏡およびこの内視鏡を用いた電気メス装置 |
JPH01140906U (ja) * | 1988-03-24 | 1989-09-27 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011504654A (ja) * | 2007-11-21 | 2011-02-10 | ケンブリッジ ディスプレイ テクノロジー リミテッド | 発光デバイスおよびそのための材料 |
Also Published As
Publication number | Publication date |
---|---|
JP2006006529A (ja) | 2006-01-12 |
US20080051634A1 (en) | 2008-02-28 |
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