WO2005094662A1 - 内視鏡挿入補助用プローブ及びこれを適用する内視鏡装置 - Google Patents
内視鏡挿入補助用プローブ及びこれを適用する内視鏡装置 Download PDFInfo
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- WO2005094662A1 WO2005094662A1 PCT/JP2005/006175 JP2005006175W WO2005094662A1 WO 2005094662 A1 WO2005094662 A1 WO 2005094662A1 JP 2005006175 W JP2005006175 W JP 2005006175W WO 2005094662 A1 WO2005094662 A1 WO 2005094662A1
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- Prior art keywords
- probe
- endoscope
- shape detection
- distal end
- assisting
- 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
- A61B1/12—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
-
- 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
- A61B1/00147—Holding or positioning arrangements
- A61B1/00154—Holding or positioning arrangements using guiding arrangements for insertion
-
- 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
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00082—Balloons
-
- 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
- A61B1/009—Flexible endoscopes with bending or curvature detection of the 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
- A61B1/31—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 the rectum, e.g. proctoscopes, sigmoidoscopes, colonoscopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/06—Devices, other than using radiation, for detecting or locating foreign bodies ; determining position of probes within or on the body of the patient
- A61B5/065—Determining position of the probe employing exclusively positioning means located on or in the probe, e.g. using position sensors arranged on the probe
-
- 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
Definitions
- the present invention relates to an endoscope insertion assisting probe and an endoscope apparatus to which the probe is applied, and more particularly, to an endoscope by inserting the insertion portion of the endoscope into a body cavity prior to inserting the insertion portion into the body cavity.
- the present invention relates to an endoscope insertion assisting probe for assisting insertion of an endoscope and an endoscope apparatus to which the probe is applied.
- the insertion shape detection probe disclosed in Patent Document 1 includes a plurality of coil devices for generating or detecting a magnetic field in an insertion portion of an endoscope, and a signal line connected to the coil device.
- a signal line connected to the coil device.
- the insertion shape detection probe disclosed in Patent Document 2 is provided in an endoscope.
- an insertion shape detection probe provided with a magnetic field detection element is inserted through the treatment instrument communication channel provided, and the insertion portion in this state is inserted into a body cavity, thereby displaying on the screen of the detection device.
- the shape of the insertion portion at the time of insertion is displayed.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2002-345727
- Patent Document 2 JP 2003-47586 A
- the insertion shape detection probe disclosed in Patent Document 1 or Patent Document 2 described above uses a display on the screen of the detection device to determine the shape of the insertion portion at the time of insertion and the position up to the tip of the insertion portion. Although information can be obtained, no consideration is given to detecting information such as a bending state in a body cavity further ahead of the inserted endoscope insertion section.
- the present invention has been made in view of the above points, and has as its object to improve the insertability of a probe to be inserted prior to insertion of an insertion portion of an endoscope into a body cavity.
- an endoscope insertion assisting probe inserts an insertion portion of an endoscope into a body cavity prior to inserting the insertion portion into the body cavity, thereby enabling the endoscope to be inserted into the body cavity.
- An endoscope insertion assisting probe for assisting insertion comprising: an elongated probe having flexibility; and a distal tip disposed at a distal end of the probe. Is characterized by being formed of a thin-film resin member and configured to be expandable by a fluid.
- the present invention it is possible to improve the insertability of a probe to be inserted prior to the insertion of the insertion portion of the endoscope into the body cavity, and to easily insert the endoscope into the body cavity. Good to do It is possible to provide an endoscope insertion assisting probe capable of realizing good operability and an endoscope apparatus to which the probe is applied.
- FIG. 1 is a diagram showing a schematic configuration of an insertion shape detection device system to which an endoscope insertion assistance probe (insertion shape detection probe) according to a first embodiment of the present invention is applied.
- FIG. 2 is a cross-sectional view schematically showing an internal configuration of an endoscope insertion assisting probe (insertion shape detection probe) in the insertion shape detection device system of FIG. 1.
- FIG. 3 is an enlarged view of a distal end portion of the endoscope insertion assisting probe (insertion shape detection probe) of FIG. 2 in a state where a resin member (balloon) is mounted
- FIG. 4 is a cross-sectional view showing a state in which a fat member (balloon) is contracted.
- FIG. 4 shows a state in which the endoscope insertion assisting probe (insertion shape detection probe) in FIG. 2 is inserted into the intestinal tract, and a resin member (balloon) is inflated. It is a figure.
- FIG. 5 is a cross-sectional view taken along line VV of FIG. 4.
- FIG. 6 is a view for explaining the operation when the insertion shape detection probe of FIG. 2 is inserted into a body cavity, and shows a large intestine and an insertion shape detection probe inserted into the intestinal tract and an endoscope insertion probe. It is a figure showing the state of an entrance.
- FIG. 7 is a view showing a display mode of an insertion shape of the insertion shape detection probe corresponding to the state shown in FIG. 6, and showing a display screen displayed on a monitor of the insertion shape detection device.
- FIG. 8 is a view for explaining the operation when the insertion shape detection probe of FIG. 2 is inserted into a body cavity, and shows a large intestine and an insertion shape detection probe inserted into the intestine and an endoscope insertion probe. It is a figure showing the state of an entrance.
- FIG. 9 is a view showing a display mode of an insertion shape of an insertion shape detection probe corresponding to the state shown in FIG. 8, and showing a display screen displayed on a monitor of the insertion shape detection device.
- FIG. 10 is a view for explaining the operation when the insertion shape detection probe of FIG. 2 is inserted into a body cavity. It is a figure showing the state of an insertion part.
- FIG. 11 is a view showing a display form of an insertion shape of the insertion shape detection probe corresponding to the state shown in FIG. 10, and showing a display screen displayed on a monitor of the insertion shape detection device.
- FIG. 12 is a view for explaining the operation when the insertion shape detection probe of FIG. 2 is inserted into a body cavity, and shows the large intestine and the insertion shape detection probe inserted into the intestine and the endoscope. It is a figure showing the state of a part.
- FIG. 13 is a view showing a display form of an insertion shape of an insertion shape detection probe corresponding to the state shown in FIG. 12, and showing a display screen displayed on a monitor of the insertion shape detection device.
- FIG. 14 is a view for explaining another operation when the insertion shape detection probe of FIG. 2 is inserted into a body cavity, and shows the large intestine and the insertion shape detection probe inserted in the intestinal tract and the endoscope.
- FIG. 3 is a diagram showing a state of a mirror insertion part.
- FIG. 15 is a view showing a display form of an insertion shape of the insertion shape detection probe corresponding to the state shown in FIG. 14, and showing a display screen displayed on a monitor of the insertion shape detection device.
- FIG. 16 is a view for explaining another action when the insertion shape detection probe of FIG. 2 is inserted into a body cavity, and shows a large intestine and an insertion shape detection probe inserted into the intestinal tract and an endoscope.
- FIG. 3 is a diagram showing a state of a mirror insertion part.
- FIG. 17 is a view showing a display form of an insertion shape of the insertion shape detection probe corresponding to the state shown in FIG. 16, and showing a display screen displayed on a monitor of the insertion shape detection device.
- FIG. 18 is a view for explaining another action when the insertion shape detection probe of FIG. 2 is inserted into a body cavity, and shows the large intestine, the insertion shape detection probe inserted into the intestinal tract, and the endoscope.
- FIG. 3 is a diagram showing a state of a mirror insertion part.
- FIG. 19 is a view showing a display form of an insertion shape of the insertion shape detection probe corresponding to the state shown in FIG. 18, and is a display screen displayed on a monitor of the insertion shape detection device.
- FIG. 20 is a view for explaining another operation when the insertion shape detection probe of FIG. 2 is inserted into a body cavity, wherein the insertion shape detection probe inserted into the large intestine and its intestinal tract and an endoscope are shown.
- FIG. 3 is a diagram showing a state of a mirror insertion part.
- FIG. 21 is a view showing a display mode of an insertion shape of an insertion shape detection probe corresponding to the state shown in FIG. 20, and showing a display screen displayed on a monitor of the insertion shape detection device.
- FIG. 22 shows a modification of the first embodiment of the present invention, and shows an endoscope in an insertion shape detecting device system to which the endoscope insertion assisting probe of the first embodiment is applied. It is a principal part expanded sectional view which expands and shows the front-end
- FIG. 23 is a view for explaining the operation of a modified example of the first embodiment of the present invention, in which a large intestine, an insertion shape detection probe to be inserted into the intestinal tract, and an endoscope insertion portion are shown. It is a figure showing a state.
- FIG. 24 is a view showing a display mode of the insertion shape of the insertion shape detection probe corresponding to the state shown in FIG. 23, and is a view showing a display screen displayed on a monitor of the insertion shape detection device.
- FIG. 25 is a view for explaining the operation of a modified example of the first embodiment of the present invention, in which a large intestine, an insertion shape detection probe to be inserted into the intestine thereof, and an endoscope insertion portion are shown. It is a figure showing a state.
- FIG. 26 is a view showing a display form of an insertion shape of the insertion shape detection probe corresponding to the state shown in FIG. 25, and showing a display screen displayed on a monitor of the insertion shape detection device.
- FIG. 27 is a view for explaining the operation of a modification of the first embodiment of the present invention.
- FIG. 27 shows a large intestine, an insertion shape detection probe inserted into the intestine, and an endoscope insertion portion. It is a figure showing a state.
- FIG. 28 is a view showing a display form of an insertion shape of the insertion shape detection probe corresponding to the state shown in FIG. 27, and showing a display screen displayed on a monitor of the insertion shape detection device.
- FIG. 29 is a view for explaining the operation of a modification of the first embodiment of the present invention
- FIG. 3 is a diagram showing the state of a large intestine, an insertion shape detection probe inserted into the intestinal tract, and an endoscope insertion portion.
- FIG. 30 is a view showing a display form of an insertion shape of the insertion shape detection probe corresponding to the state shown in FIG. 29, and showing a display screen displayed on a monitor of the insertion shape detection device.
- FIG. 31 is a view for explaining another operation of a modification of the first embodiment of the present invention, which shows a large intestine and an insertion shape detection probe to be inserted into the intestinal tract and an endoscope insertion; It is a figure showing the state of a part.
- FIG. 32 is a view showing a display mode of the insertion shape of the insertion shape detection probe corresponding to the state shown in FIG. 31, and showing a display screen displayed on a monitor of the insertion shape detection device.
- FIG. 33 is a view for explaining another operation of a modification of the first embodiment of the present invention, which shows a large intestine and an insertion shape detection probe to be inserted into the intestine and an endoscope insertion; It is a figure showing the state of a part.
- FIG. 34 is a view showing a display mode of the insertion shape of the insertion shape detection probe corresponding to the state shown in FIG. 33, and showing a display screen displayed on a monitor of the insertion shape detection device.
- FIG. 35 is a view for explaining another operation of a modified example of the first embodiment of the present invention, which shows a large intestine and an insertion shape detection probe to be inserted into the intestine and an endoscope insertion; It is a figure showing the state of a part.
- FIG. 36 is a view showing a display mode of the insertion shape of the insertion shape detection probe corresponding to the state shown in FIG. 35, and showing a display screen displayed on a monitor of the insertion shape detection device.
- FIG. 37 is a view for explaining another operation of a modification of the first embodiment of the present invention, and shows a large intestine, an insertion shape detection probe to be inserted into the intestine, and an endoscope; It is a figure showing the state of a part.
- FIG. 38 is a view showing a display form of the insertion shape of the insertion shape detection probe corresponding to the state shown in FIG. 37, and showing a display screen displayed on a monitor of the insertion shape detection device. It is.
- FIG. 39 is an enlarged view of a main part of an endoscope insertion assisting probe (insertion shape detection probe) according to a second embodiment of the present invention in an enlarged manner.
- FIG. 40 is a view showing a state when the endoscope insertion assisting probe (insertion shape detection probe) of FIG. 39 is inserted into the intestinal tract.
- FIG. 41 shows a modification of the second embodiment of the present invention.
- FIG. 41 is an enlarged main part mainly showing the distal end and the proximal end of an endoscope insertion assistance probe (insertion shape detection probe).
- FIG. 41 shows a modification of the second embodiment of the present invention.
- FIG. 41 is an enlarged main part mainly showing the distal end and the proximal end of an endoscope insertion assistance probe (insertion shape detection probe).
- FIG. 42 is an exploded view showing a distal end of an endoscope insertion assisting probe (insertion shape detection probe) according to a third embodiment of the present invention and a cover member attached to the distal end separately. It is a block diagram.
- FIG. 43 is an enlarged view of a main part of the endoscope insertion assisting probe (insertion shape detection probe) of FIG. 42 with a cover member attached to the front end thereof.
- FIG. 44 is an enlarged schematic cross-sectional view of a distal end portion of an endoscope insertion assistance probe (insertion shape detection probe) according to a fourth embodiment of the present invention.
- FIG. 45 is an enlarged perspective view of a main part showing a tip end of the endoscope insertion assisting probe (insertion shape detection probe) of FIG. 44 in a further enlarged manner.
- FIG. 46 is a perspective view showing a state where the endoscope insertion assisting probe (insertion shape detection probe) of FIG. 44 has been inserted into the intestinal tract.
- FIG. 47 is a cross-sectional view of FIG. 46 taken along the line 47-47.
- FIG. 48 is an enlarged view of a main part showing a distal end portion of an endoscope insertion assisting probe (insertion shape detection probe) according to a modification of the fourth embodiment of the present invention.
- FIG. 49 is an enlarged view of a main part showing a part of an endoscope insertion assistance probe (insertion shape detection probe) according to a fifth embodiment of the present invention.
- FIG. 50 is an exploded view showing a distal end portion of an endoscope insertion assisting probe (insertion shape detection probe) according to a sixth embodiment of the present invention and a cover member attached to the distal end portion. It is a block diagram.
- FIG. 51 is a configuration diagram showing a state where a cover member is attached to a distal end portion of the endoscope insertion assistance probe (insertion shape detection probe) in FIG. 50.
- FIG. 52 is a conceptual diagram showing the action of a fluid flowing inside an endoscope insertion assisting probe (insertion shape detection probe) in the state of FIG. 51.
- FIG. 53 shows a part of an endoscope insertion assistance probe (insertion shape detection probe) according to a seventh embodiment of the present invention, and is an enlarged main portion showing a normal state of the insertion shape detection probe.
- FIG. 54 is an enlarged view of a main part showing a state where the distal end portion of the insertion shape detection probe in FIG. 53 is bent.
- FIG. 55 is an enlarged view of a main part showing a state where the distal end portion of the insertion shape detection probe in FIG. 53 is extended.
- FIG. 56 is a cross-sectional view of an endoscope insertion assisting probe (insertion shape detection probe) according to an eighth embodiment of the present invention, in which a metal wire has been pulled out.
- FIG. 57 is a cross-sectional view of the endoscope insertion assisting probe (insertion shape detection probe) of FIG. 56 in which a metal wire has been inserted to the distal end.
- FIG. 58 is an enlarged perspective view of an essential part showing a cut surface cut along the line 58-58 in FIG. 57.
- FIG. 59 is an enlarged view of a main part of the endoscope insertion assisting probe (insertion shape detection probe) in FIG. 56, in which the vicinity of a metal wire insertion opening is enlarged.
- FIG. 60 is a diagram showing a state where the endoscope insertion assisting probe (insertion shape detection probe) of FIG. 56 is inserted through a bent portion in a body cavity.
- FIG. 61 is a diagram showing a state where the endoscope insertion assisting probe (insertion shape detection probe) of FIG. 56 is inserted through a portion other than a bent portion in a body cavity.
- FIG. 62 is a cross-sectional view schematically showing a main part of an internal configuration near a distal end portion of an endoscope insertion assistance probe (insertion shape detection probe) according to a ninth embodiment of the present invention.
- FIG. 63 is an endoscope insertion assisting probe according to a modification of the ninth embodiment of the present invention.
- FIG. 3 is a cross-sectional view schematically showing a main part of an internal configuration near a distal end of an (insertion shape detection probe).
- FIG. 64 is an enlarged view of a main part, showing an enlarged distal end portion of an endoscope insertion assisting probe (insertion shape detection probe) according to a tenth embodiment of the present invention.
- FIG. 65 is an enlarged cross-sectional view of a main part of a distal end portion of an endoscope insertion assisting probe (insertion shape detection probe) according to a modification of the tenth embodiment of the present invention. .
- FIG. 66 is a cross-sectional view of a main part, in which a distal end portion of an endoscope insertion assisting probe (insertion shape detection probe) according to another modified example of the tenth embodiment of the present invention is enlarged. is there.
- FIG. 67 is a cross-sectional view showing an exploded state of a spherical member fixed to a distal end portion of an endoscope insertion assistance probe (insertion shape detection probe) according to an eleventh embodiment of the present invention. is there.
- FIG. 68 is a cross-sectional view showing a state where a spherical member is attached and fixed to the tip end of the endoscope insertion assisting probe (insertion shape detection probe) of FIG. 67.
- FIG. 69 shows a state in which a spherical member fixed to the distal end portion of an endoscope insertion assistance probe (insertion shape detection probe) according to a twelfth embodiment of the present invention is separated from the probe main body. It is sectional drawing.
- FIG. 70 is a cross-sectional view showing a state in which a spherical member is attached to and fixed to the tip end of the endoscope insertion assisting probe (insertion shape detection probe) in FIG. 69.
- FIG. 71 is a cross-sectional view showing a state in which a spherical member is attached to and fixed to the distal end of an endoscope insertion assistance probe (insertion shape detection probe) according to a thirteenth embodiment of the present invention.
- FIG. 72 is a cross-sectional view showing a state in which a spherical member fixed to the front end of the endoscope insertion assistance probe (insertion shape detection probe) in FIG. 71 and a probe main body are separated.
- FIG. 73 is a view showing a state in which the endoscope insertion assisting probe of FIG. 64 (tenth embodiment) is used by being inserted into a forceps channel of an endoscope.
- FIG. 74 is a view showing a state where the endoscope insertion assisting probe of FIG. 64 (tenth embodiment) is held and used outside the endoscope insertion section.
- FIG. 75 is a cross-sectional view showing an internal configuration near the distal end of an insertion shape detection probe (endoscope insertion assisting probe) in an insertion shape detection device system according to a fourteenth embodiment of the present invention. is there.
- FIG. 76 is an enlarged view of the distal end guide near the distal end of the insertion shape detection probe (endoscopic insertion assisting probe) of FIG. 75 and the attachment site of the distal end guide. It is a principal part enlarged view shown.
- FIG. 77 is an enlarged view of one form of a tip guide applied to an insertion shape detection probe (an endoscope insertion assisting probe) in the insertion shape detection device system of FIG. 75 and a mounting portion of the tip guide. It is a principal part enlarged view shown as.
- FIG. 78 is a view showing another embodiment of the tip guide applied to the insertion shape detection probe (endoscope insertion assisting probe) in the insertion shape detection device system of FIG. 75, and mounting of the tip guide. It is a principal part enlarged view which expands and shows a site
- FIG. 79 is a side view showing a configuration near the distal end of an insertion shape detection probe (endoscope insertion assisting probe) according to a fifteenth embodiment of the present invention.
- FIG. 80 is an enlarged view of a dimple formed on the surface of the distal end guide near the distal end of the insertion shape detection probe (endoscope insertion assisting probe) in FIG. 79.
- FIG. 80 is an enlarged sectional view of a main part, taken along the line 80-80 in FIG. 79.
- FIG. 81 is a side view showing a configuration near the distal end of an insertion shape detection probe (endoscope insertion assisting probe) in a modification of the fifteenth embodiment of the present invention.
- FIG. 82 is a view showing a schematic configuration of an endoscope device (insertion shape detection device system) to which an insertion shape detection probe (endoscope insertion assistance probe) according to a sixteenth embodiment of the present invention is applied; It is.
- FIG. 83 is a side cross-sectional view schematically showing the internal configuration near the front end of the insertion shape detection probe (endoscope insertion assisting probe) shown in FIG. 82.
- FIG. 1 is a diagram showing a schematic configuration of an endoscope apparatus (insertion shape detection system) to which an endoscope insertion assistance probe (insertion shape detection probe) according to a first embodiment of the present invention is applied.
- FIG. 2 is a cross-sectional view schematically showing an internal configuration of an insertion shape detection probe (endoscope insertion assisting probe) in the insertion shape detection device system of FIG.
- an insertion shape detection probe that is an endoscope insertion assistance probe is used.
- a description will be given by taking an example of an inserted shape detection device system to be applied.
- An insertion shape detection system 2 shown in Fig. 1 uses an insertion shape detection probe 1 as an endoscope insertion assistance probe of the present embodiment.
- the insertion shape detection system 2 is used for observing a site to be observed when it is inserted, for example, from the anus into a body cavity or the like of a subject.
- An insertion shape detection device 7 that outputs a video signal obtained by imaging the insertion shape of the endoscope 3 in the body cavity from a corresponding signal, and a monitor that displays the shape of the insertion portion output from the insertion shape detection device 7 8 mainly.
- the endoscope 3 is located on the distal end side and is bent with a small radius of curvature, and an insertion portion bending portion 11a, and is located on the base end side of the insertion portion bending portion 1 la and is bent with a relatively large radius of curvature.
- the insertion shape detection probe 1 is inserted and arranged in a treatment tool insertion port 14 and a treatment tool communication channel 15 provided in the operation unit 12 of the endoscope 3.
- the insertion shape detection probe 1 is provided with a plurality of source coils 21 as shape detection elements for generating a magnetic field, for example, generating a magnetic field (see FIG. 2 for details).
- the insertion shape detection probe 1 is connected to the insertion shape detection device 7 via a connector 22 provided at the base end.
- the insertion shape detection bed 6 is provided with a plurality of sense coils 9 as magnetic field detection elements for detecting a magnetic field generated by the source coil 21.
- the insertion shape detection bed 6 and the insertion shape detection device 7 are connected by a cable 9a. Therefore, the detection signal of the sense coil 9 is transmitted to the insertion shape detecting device 7 via the cable 9a.
- the insertion shape detection device 7 includes a source coil driving unit (not shown) for driving the source coil 21, and a signal force transmitted from the sense coil 9, and a three-dimensional position coordinate of the source coil 21.
- a source coil position analysis unit (not shown) for analysis calculates a three-dimensional shape of the insertion unit 11 from the three-dimensional position coordinate information of the source coil 21, and outputs a two-dimensional shape for monitor display.
- An insertion shape image generation unit (not shown) for converting the image into coordinates and forming an image is provided.
- the insertion shape detection device 7 further includes a pump, which is a fluid supply device for supplying air or water to the inside of the insertion shape detection probe 1 connected via the connector portion 22, and driving the pump.
- a pump which is a fluid supply device for supplying air or water to the inside of the insertion shape detection probe 1 connected via the connector portion 22, and driving the pump.
- a control circuit and the like are provided.
- a plurality of shape detecting elements (source coils 21) for generating a magnetic field are arranged on the inserted shape detecting probe 1, and the inserted shape detecting bed 6 is provided with a magnetic field detecting element (sense coil).
- 9 shows an example in which a plurality of 9) are arranged.
- a plurality of shape detecting elements (sense coils) for magnetic field detection are arranged on the insertion shape detecting probe 1, and a magnetic field generating element (source coil) is mounted on the insertion shape detecting bed 6. It may be configured to arrange a plurality of them.
- the insertion shape detection probe 1 in the insertion shape detection device system shown in FIG. 1 functions as an endoscope insertion assistance probe.
- the insertion shape detection probe 1 includes an outer sheath 20 forming an outer portion, and a plurality (12 in the present embodiment) formed in a substantially cylindrical shape having a hollow portion.
- Source coils 21A, 21B, 21C, 21D,..., 21L (hereinafter abbreviated as 21A to 21L), an elongated core wire 23 to which these source coils 21A to 21L are adhered and fixed, and a And a connection fixing member for covering the source coils 21A to 21L and the inner sheath 24 adjacent thereto and integrally connecting the source coils 21A to 21L in series with the source coils 21A to 21L.
- This is mainly constituted by a heat-shrinkable tube 40, which is provided at the base end, and a connector portion 22 provided at the base end portion for ensuring electrical connection with the insertion shape detecting device 7.
- the source coil 21A on the distal end side of the inserted shape detection probe 1 is referred to as a first source coil 21A, and the second source coil 21B, the third source coil 21C, the fourth source coil 21D,.
- the twelfth source coil is 21L.
- the source coils 21 A to 21 L and the inner sheath 24 are configured such that the distal side force of the insertion shape detection probe 1 is also directed toward the proximal end side of the first source coil 21 A, the inner sheath 24, 2 source coil 21B, inner sheath 24, 3rd source coil 21B, ... Is placed.
- a signal line 26 for transmitting a drive signal from a source coil driving unit (not shown) of the insertion shape detecting device 7 (see FIG. 1) is connected to one end of each of the source coils 21A to 21L. .
- the first to third source coils 21A to 21C are arranged in the insertion portion bending portion 11a (see FIG. 1).
- the first to third source coils 21A to 21C are a curved portion shape detecting element group for obtaining shape data of the insertion portion curved portion 11a.
- the other fourth to twelfth source coils 21D to 21L are arranged in the flexible tube portion lib (see FIG. 1) of the insertion portion.
- the fourth to twelfth source coils 21D to 21L are a flexible tube shape detecting element group for obtaining shape data of the insertion portion flexible tube portion lib.
- Each signal line 26 connected to each of the source coils 21A to 21L passes through the inside of an inner sheath 24 disposed on the base end side of each of the source coils 21A to 21L, and is inserted into the insertion shape detection probe. 1 extends toward the proximal end.
- the signal line 26 from which the first source coil 21A on the foremost side also extends extends to the adjacent peripheral surface of all source coils up to the final end source coil 21L with the force of the next adjacent second source coil 21B.
- the signal wires 26 passing through the insides of the inner sheaths 24 are wound along the core wires 23 with a predetermined slack. This is a measure to prevent the signal line 26 from being tensioned when the insertion shape detection probe 1 is bent, so that breakage such as disconnection does not occur.
- a distal end piece 27 whose distal end side is formed in a substantially hemispherical shape is disposed at the most distal end of the outer sheath 20 in the insertion shape detection probe 1.
- FIGS. 3 and 4 are enlarged cross-sectional views showing the distal end portion of the insertion shape detection probe shown in FIG. 2, and show a state in which a resin member (balloon 31) is mounted. Is shown. 3 shows a state in which the resin member (balloon 31) is contracted. 4 and 5 are views showing a state in which the insertion shape detection probe of the present embodiment is inserted into the intestinal tract, and the resin member (balloon 31) is inflated.
- FIG. 5 is a sectional view taken along the line VV of FIG. 3 to 5, the internal components of the insertion shape detection probe 1 are not shown.
- a plurality of through holes la are formed in a predetermined portion near the distal end of the insertion shape detection probe 1 and covered by the balloon 31. Have been.
- a slight gap lb is formed between the inner wall surface of the outer sheath 20 of the insertion shape detection probe 1 and the outer peripheral surface of each of the source coils 21 and the inner sheaths 24. The gap lb is continuously inserted from the distal end portion of the insertion shape detection probe 1 to the connector portion 22 at the proximal end portion.
- the pump 7a (not shown in FIG. 1; see FIG. 3), which is the fluid supply device of the above-described insertion shape detection device 7 (FIG. 1), the lateral force of the pump 7a is also reduced.
- a fluid is supplied or supplied to the inside of the insertion shape detection probe 1 through the connector portion 22, this fluid passes through the gap lb and reaches the tip of the insertion shape detection probe 1, and finally, The liquid is discharged from a plurality of through holes la.
- This fluid causes balloon 31 to expand.
- the balloon 31 changes from the contracted state shown in FIG. 3 to a substantially spherical shape as shown in FIGS.
- the pump 7a of the insertion shape detection device 7 is drive-controlled to suck the fluid inside the insertion shape detection probe 1 toward the pump 7a.
- the balloon 31 changes to a contracted state as shown in FIG.
- FIGS. 6 to 13 show an endoscope insertion assisting probe in a body cavity in an insertion shape detecting device system including an endoscope insertion assisting probe (insertion shape detecting probe 1) of the present embodiment.
- FIGS. 6, 8, 10, and 12 illustrate the action during insertion.
- FIG. 3 is a view showing a state of an endoscope insertion assisting probe (insertion shape detection probe 1) inserted into the intestinal tract and an endoscope insertion portion.
- FIGS. 7, 9, 11, and 13 show the insertion shapes of the endoscope insertion assistance probe (insertion shape detection probe 1) in the states shown in FIGS. 6, 8, 8, and 12, respectively.
- FIG. 7 is a diagram showing a display screen displayed on a monitor of the insertion shape detecting device for displaying the symbol.
- the insertion shape detection probe 1 having the balloon 31 attached to the distal end is inserted and arranged from the treatment instrument insertion port 14 provided in the operation section 12 of the endoscope 3 to the inside of the treatment instrument communication channel 15.
- the balloon 31 is in a contracted state.
- the distal end of the insertion shape detection probe 1 is arranged so as not to protrude from the distal end of the insertion portion 11.
- the insertion section 11 of the endoscope 3 is inserted into the body cavity of the subject.
- the insertion portion 11 of the endoscope 3 is inserted into the rectum 52 from, for example, the anus 51 of the subject (see FIG. 6).
- the insertion section 11 of the endoscope 3 is supported so as not to move, and in this state, the distal end portion of the insertion shape detection probe 1 is positioned at the forefront of the insertion section 11.
- the balloon 31 is projected forward from the part until a predetermined amount, that is, a part where the balloon 31 is mounted is exposed.
- the balloon 31 is inflated.
- the drive control of the pump 7a (see FIG. 3) of the insertion shape detecting device 7 (see FIG. 1) is started here.
- the fluid is supplied or supplied from the side of the pump 7a toward the inside of the insertion shape detection probe 1.
- the fluid reaches the distal end of the probe 1 through the gap lb inside the insertion shape detection probe 1 and finally is discharged from the plurality of through holes la to the outside, that is, to the inside of the balloon 31.
- the drive control of the pump 7a (see FIG. 3) is stopped when the size of the norain 31 becomes a predetermined size.
- the size of the balloon 31 is, for example, such that the diameter of the balloon 31 is smaller than the minimum diameter of the intestinal wall 50a in the intestinal tract 50 as shown in FIGS.
- the nolan 31 of the insertion shape detection probe 1 is in an expanded state (the state shown in Figs. 4 and 5). In this state, a predetermined negative pressure is applied from the pump 7a side so that the fluid filled in the balloon 31 does not flow backward. Thus, the substantially spherical shape of the balloon 31 is maintained.
- the operator pushes only the insertion shape detection probe 1 in a state where the inflated balloon 31 is attached to the distal end portion so that the treatment tool insertion port 14 of the operation unit 12 is pushed in. Insert. As a result, the probe 1 proceeds inside the rectum 52.
- the balloon 31 may come into contact with the unevenness of the intestinal wall 50a of the intestinal tract 50 of the rectum 52 while proceeding.
- the balloon 31 has a substantially spherical shape with a sufficiently large size with respect to the unevenness of the intestinal wall 50a. Therefore, the balloon 31 is smoothly inserted along the intestinal wall 50a so as to slide on the apexes of those convexities without entering the unevenness of the intestinal wall 50a.
- the insertion section 11 is advanced along the insertion shape detection probe 1. That is, in this case, only the insertion section 11 is inserted while supporting the insertion shape detection probe 1 so as not to move. Then, when the distal end of the insertion section 11 advances to the vicinity of the portion of the insertion shape detection probe 1 where the balloon 31 is inserted, the insertion section 11 is supported again at that position so as not to move. Next, while keeping the position of the insertion section 11, only the insertion shape detection probe 1 is advanced.
- the nore 31 of the inserted shape detection probe 1 passes through the rectum 52, it subsequently reaches the bent sigmoid colon 53. Then, the distal end of the balloon 31 first comes into contact with the bent portion of the sigmoid colon 53. Since the balloon 31 has a substantially spherical shape, the balloon 31 is formed on the intestinal wall 50a according to the bent shape of the sigmoid colon 53. Will follow along. Then, the balloon 31 of the insertion shape detection probe 1 passes through the sigmoid colon 53 and reaches from the descending colon 54 to the vicinity of the spleen curve 55. The state at this time is the state shown in FIG. At this time, a display screen 8a as shown in FIG.
- the line drawing indicated by the symbol lc represents the shape of the insertion shape detection probe 1.
- the insertion section 11 is inserted and advanced again along the insertion shape detection probe 1. At this time, the insertion operation of the insertion unit 11 is performed with reference to the display screen 8a of the monitor 8 in FIG.
- the insertion of the insertion section 11 is stopped, and then only the insertion shape detection probe 1 is advanced. Then, the state shown in FIG. 8 is obtained. At this time, the monitor 8 of the insertion shape detecting device 7 is shown in FIG. Such a display screen 8a is displayed, and the shape of the inserted shape detection probe 1 at this time can be confirmed.
- FIG. 13 shows a display screen 8a corresponding to the state of FIG.
- the insertion shape detection probe 1 and the insertion portion 11 are alternately advanced in the insertion direction, advance from the transverse colon 56 to the ascending colon 58 through the liver curve 57, and finally, Is placed just before the cecum 59.
- the pump 7a of the insertion shape detection device 7 is drive-controlled to suck the fluid inside the insertion shape detection probe 1 toward the pump 7a.
- the balloon 31 changes to a contracted state as shown in FIG. Therefore, an operation of pulling the insertion shape detection probe 1 into the treatment instrument communication channel 15 is performed.
- the insertion shape detection probe 1 may be completely pulled out from the treatment instrument communication channel 15, and at least the tip of the insertion shape detection probe 1 (the portion where the balloon 31 is mounted) may be inserted.
- the probe 1 is pulled in until it does not protrude.
- the preparation for conducting the observation inspection using the insertion section 11 of the endoscope 3 is completed.
- the operation when using the insertion shape detection probe 1 as the endoscope insertion assisting probe of the present embodiment may be performed in the following manner, separately from the above-described procedure.
- FIGS. 14 to 21 show an endoscope insertion assisting pro- cess inside a body cavity in an insertion shape detecting device system including the endoscope insertion assisting probe (insertion shape detecting probe 1) of the present embodiment.
- FIGS. 14, 16, 18, and 20 illustrate another operation when inserting a probe into the colon and the endoscope insertion assisting probe (insertion shape detection) inserted into the large intestine and its intestine.
- FIG. 3 is a diagram showing a state of a probe 1) and an endoscope insertion section.
- Figures 15, 17, 17, 19, and 21 show the insertion shapes of the endoscope insertion assistance probe (insertion shape detection probe 1) in the states shown in Figs. 14, 16, 16, and 20, respectively.
- FIG. 6 is a diagram showing a display screen displayed on a monitor of the insertion shape detecting device for displaying a symbol.
- the balloon 31 is placed in the rectum 52, the sigmoid colon 53, the descending colon 54, the splenic curvature 55, the transverse colon 56, and the liver. It is finally placed at the position immediately before the cecum 59 via the curved 57 and ascending colon 58, and the insertion section 11 is inserted to the position immediately before the cecum 59 using this as a guide while referring to the display screen 8a. is there.
- the detailed description of the same operation as the above-mentioned procedure will be omitted, and the different operation will be mainly described below.
- the insertion shape detection probe 1 is inserted and arranged from the treatment tool entrance 14 to the inside of the treatment tool passage channel 15. Then, the insertion portion 11 in which the insertion shape detection probe 1 is inserted and arranged is inserted into the body cavity of the subject, for example, from the anus 51 (see FIG. 14) of the subject into the rectum 52.
- the insertion shape detection probe 1 When the insertion section 11 is slightly inserted into the body cavity of the subject, the insertion shape detection probe 1 is pushed in while supporting the insertion section 11, and the distal end portion is moved from the foremost end of the insertion section 11. Project by a predetermined amount.
- the amount of protrusion at this time is such that the balloon 31 is worn and the bulge is exposed, as in the above-described procedure.
- the balloon 31 is inflated by controlling the drive of the pump 7a (see FIG. 3) of the insertion shape detecting device 7 (see FIG. 1).
- the balloon 31 of the insertion shape detection probe 1 passes through the rectum 52 to reach the sigmoid colon 53, and the sigmoid colon 53 is further bulged. After passing through the descending colon 54 smoothly, it reaches the vicinity of the spleen curve 55 due to the substantially spherical shape of the leg 31.
- the state at this time is the state shown in FIG.
- a display screen 8a as shown in FIG. 15 is displayed on the monitor 8 of the insertion shape detecting device 7.
- the balloon 31 of the probe 1 reaches the spleen curve 55, smoothly passes through the bent portion, and is in the vicinity of the transverse colon 56. Leads to.
- the state at this time is the state shown in FIG. At this time, a display screen 8a shown in FIG. 17 is displayed on the monitor 8.
- the balloon 31 of the probe 1 advances to the ascending colon 58 via the liver curve 57 and is finally arranged at a position immediately before the cecum 59.
- the state at this time is the state shown in FIG.
- a display screen 8a shown in FIG. 19 is displayed on the monitor 8.
- the insertion section 11 is inserted along the insertion shape detection probe 1 as a guide.
- the insertion portion 11 can be easily and smoothly placed in the body cavity. Can be inserted up to the target site.
- the insertion shape detection probe 1 and the insertion portion 11 are arranged at a desired target site in the body cavity, for example, at a position immediately before the cecum 59 as described above, the insertion is performed in the same manner as the above-described procedure.
- the pump 7a of the shape detecting device 7 is drive-controlled to suck the fluid inside the inserted shape detecting probe 1 toward the pump 7a.
- the balloon 31 changes to a contracted state (see FIG. 3).
- the insertion shape detection probe 1 is pulled into the treatment instrument communication channel 15.
- the preparation for conducting the observation inspection using the insertion section 11 of the endoscope 3 is completed.
- the insertion shape detection probe 1 as an endoscope insertion assisting probe is inserted into the intestinal tract 50 in advance, and data obtained thereby is obtained.
- the insertion shape of the insertion shape detection probe 1 is displayed on the monitor 8 based on the image signals generated by the insertion shape detection device 7 in response to the Insert the insertion section 11 of the endoscope 3 safely and securely into the
- the inserted shape detecting device system configured as described above can be realized.
- the insertion shape detecting probe 1 applied as an endoscope insertion assisting probe has a balloon 31 which is a flexible and stretchable thin film-shaped elastic member at its distal end. It is configured to be mounted.
- the balloon 31 can be arbitrarily inflated to a predetermined size and controlled to a contracted state by controlling the driving of the pump 7a by the insertion shape detecting device 7 when desired. It is structured as follows.
- the balloon 31 is inflated, so that the distal end of the insertion shape detection probe 1 traveling inside the intestine 50 is The insertion shape detection probe 1 does not enter the unevenness of the intestinal wall 50a or abut on the bent part of the intestinal tract 50 to hinder the progress of the insertion shape detection probe 1 or damage the intestinal wall 50a. Can proceed smoothly along the shape
- the insertion section 11 of the endoscope 3 is inserted along the insertion shape detection probe 1 while referring to the insertion shape of the insertion shape detection probe 1 displayed on the display screen 8a of the monitor 8. Therefore, the insertion section 11 can be easily and smoothly inserted into a desired target site in the body cavity.
- an endoscope provided with an insertion section having an insertion position detection member near the distal end.
- An embodiment in which the above-described endoscope insertion assisting probe according to the first embodiment is applied to an insertion shape detection device system including an endoscope of this type will be described below.
- FIG. 22 shows a modified example of the first embodiment of the present invention, in which an endoscope insertion system in the insertion shape detection device system to which the endoscope insertion assisting probe of the first embodiment is applied. It is a principal part expanded sectional view which expands and shows the front-end
- the insertion section 11 A of the endoscope of the insertion shape detection device system used in The tip is configured as follows. That is, the through hole (not shown) for forming the illumination window, the through hole 62 for forming the observation / imaging window, the imaging unit 63, and the tip body 61 having the tip position detecting unit 45 as an insertion position detecting member.
- a cylindrical frame 67 that covers the imaging unit 63 and the like that is connected to the rear end outer periphery of the distal end main body 61 and disposed inside; a distal end cover 68 that covers the front end side of the distal end main body 61; It is formed by a rear end side of the main body 61 and a skin tube 69 covering each outer surface of the cylindrical frame 67 and the like.
- the imaging unit 63 includes an objective lens system 72 attached to a lens frame 71, an imaging unit 73 that also has an imaging element such as a CCD disposed at an image forming position of the objective lens system 72, and the like. I have.
- the signal cable 74 also extends to the rear end of the imaging section 73.
- the first lens 72a of the objective lens system 72 is joined to the front end surface of the lens frame 71, and the lens frame 71 is inserted into a through hole 78a formed in the front end cover 68 so that the front end Fixed to cover 68.
- the signal cable 44 extends from the endoscope insertion section 11A and the operation section 12 (see FIG. 1) of the endoscope 3 to the video processor 4 via the universal cord 13. Thereby, an electrical connection between the imaging unit 63 and the video processor 4 is secured.
- a concave portion 65 is formed on the rear end surface of the distal end portion main body 61.
- a distal end portion of a distal end position detecting section 45 for detecting the position of the distal end of the insertion section 11A is fixed to the recess 65 with a screw 66.
- the tip position detecting section 45 has a pin 75 at the tip.
- the pin 75 has a V-shaped groove 76 formed all around the cylindrical surface.
- the tip position detecting section 45 is configured such that, after the pin 75 is fitted into the concave portion 75 of the tip body 61, the conical tip of the screw 66 further enters the V groove 76 of the pin 75. It is fixedly held by the tip main body 61.
- the tip position detecting section 45 has the pin 75 fixed to the tip of a support member 80 provided over the entire length thereof, and a coil device 81 is fixed to the support member 80 behind the pin 75. Have been.
- the coil device 81 is formed of a magnetic material having high magnetic permeability such as ferrite or permalloy. It is formed by a coil 83 formed by winding a conductive wire around a core 82 by a predetermined number of times.
- a substrate 94 is joined to one end of the coil 83 of the coil device 81. That is, the coil device 81 is provided by joining a substrate 94 to the base end side of the coil 83 of the core 82, and the conductor of the coil 83 is connected to the substrate 84.
- the pin 75 is formed with a through hole 75a through which the support member 80 passes.
- the core 82 has a through hole 82a through which the support member 80 passes. Accordingly, the support member 80 is connected and fixed at a predetermined position by an adhesive or solder through the through holes 75a and 82a.
- the two should not be in direct contact with each other, and the two (the pin 75 and the coil device 81) should not be in contact with each other.
- a filler 86 such as silicone is filled so that a slight deformation is possible.
- an outer tube 87 that covers the outer surfaces of the coil device 81, the signal line 85, the support member 80 and the like is fixed.
- the outer tube 87 is disposed in close contact with the outer shape of the coil device 81, the signal line 85, the support member 80, and the like, and its base end extends to the operation unit 12 (see FIG. 1). are doing.
- a through hole such as an air / water supply channel / treatment instrument insertion channel is formed in the distal end surface of the insertion portion 11A.
- An insertion position detecting member 45 as an insertion position detection member is provided in the vicinity of the distal end, and the insertion portion 11A of the endoscope applied in this modification is configured as described above. Being done.
- Other configurations of the insertion shape detecting device system and the endoscope insertion assisting probe used for the same are the same as those of the above-described first embodiment.
- FIG. 23 to FIG. 30 are views for explaining the operation according to the modified example of the first embodiment of the present invention.
- FIG. 23, FIG. 25, FIG. 27, and FIG. FIG. 3 is a diagram showing a state of a probe for assisting insertion of an endoscope (insertion shape detection probe 1) and an endoscope insertion portion.
- Figures 24, 26, 28, and 30 as well as Figure 23, Figure 25, Figure 27, and Figure 29
- FIG. 9 is a diagram showing a display screen displayed on a monitor of the insertion shape detection device for displaying an insertion shape of an endoscope insertion assistance probe (insertion shape detection probe 1) to be inserted.
- FIGS. 23, 25, 27, and 29 correspond to FIGS. 6, 8, 10, and 12 in the first embodiment
- FIGS. 24, 26, 28, and 28 correspond to FIGS.
- FIG. 30 shows FIG. 7, FIG. 9, FIG. 11, and FIG. 13 in the first embodiment described above.
- the operation of the present modified example is substantially the same as the operation of the above-described first embodiment.
- the position of the distal end of the insertion section 11A is changed.
- the only difference is that the position is detected by the presence of the tip position detector 45 and the position information is displayed on the display screen of the monitor 8. Therefore, in the following description, the same operation as that of the above-described first embodiment will be briefly described, and only the different operation will be described in detail.
- the insertion shape detection probe 1 is inserted from the treatment instrument insertion port 14 to the inside of the treatment instrument communication channel 15. Then, the insertion portion 11A in which the insertion shape detection probe 1 is inserted and arranged is inserted into the body cavity of the subject, for example, from the anus 51 (see FIG. 23) of the subject into the rectum 52.
- the insertion shape detection probe 1 When the insertion portion 11A is slightly inserted into the body cavity of the subject, the insertion shape detection probe 1 is pushed in while supporting the insertion portion 11A, and the distal end portion is moved from the foremost end of the insertion portion 11. Project by a predetermined amount. The amount of protrusion at this time is such that the portion where the balloon 31 is mounted is exposed, as in the above-described procedure.
- the balloon 31 is inflated by controlling the drive of the pump 7a (see FIG. 3) of the insertion shape detecting device 7 (see FIG. 1).
- the insertion shape detection probe 1 in a state where the inflated balloon 31 is attached to the distal end is subjected to the insertion operation so that the force on the treatment instrument insertion port 14 side is also pushed.
- the probe 1 proceeds inside the rectum 52.
- the balloon 31 is smoothly inserted along the intestinal wall 50a without entering the unevenness of the intestinal wall 50a.
- the balloon 31 of the insertion shape detection probe 1 passes through the rectum 52 to reach the sigmoid colon 53, and further, the sigmoid colon 53 passes through the balloon 31. Smoothly passes through the approximately spherical shape of the skull and reaches the vicinity of the spleen curve 55 from the descending colon 54 To do.
- the state at this time is the state shown in FIG.
- a display screen 8a as shown in FIG. 24 is displayed on the monitor 8 of the insertion shape detecting device 7.
- the line drawing indicated by the reference numeral lc represents the shape of the insertion shape detection probe 1.
- the insertion section 11A is again inserted along the insertion shape detection probe 1 and advanced.
- the insertion operation of the insertion section 11A is performed with reference to the display screen 8a of the monitor 8 in FIG.
- the pointillism indicated by the reference numeral Id is displayed on the display screen 8a of the monitor 8 in FIG.
- the stippling indicated by the reference numeral 1d represents the position of the distal end position detecting section 45 provided at the distal end of the insertion section 11A. Therefore, by referring to the display screen 8a of the monitor 8, the positional relationship of the tip of the insertion portion 11A with respect to the shape of the insertion shape detection probe 1 can be easily visually confirmed. This facilitates the operation of inserting the insertion portion 11A.
- the balloon 31 reaches the spleen curve 55 and passes through the bent portion. Also at this time, the balloon 31 moves smoothly along the intestinal wall 50a due to its substantially spherical shape. Accordingly, the traveling direction of the insertion shape detection probe 1 is also changed, and the probe 1 moves in the direction along the intestinal tract 50. Then, for example, when the balloon 31 reaches the site shown in FIG. 27, the insertion section 11A is inserted and advanced along the probe 1. The insertion operation of the insertion section 11A at this time is performed with reference to the display screen 8a of the monitor 8 in FIG. Then, as shown in FIG.
- the figure 30 shows the display screen 8a corresponding to the state of FIG.
- the insertion shape detection probe 1 and the insertion portion 11A are alternately advanced in the insertion direction, advance from the transverse colon 56 to the ascending colon 58 through the liver curve 57, and finally, Is placed just before the cecum 59.
- the insertion shape of the insertion shape detection probe 1 and the position of the tip of the insertion portion 11A displayed on the display screen 8a of the monitor 8 can be checked and referred to, so that the insertion portion 11A can be easily and smoothly inserted. It can be inserted to a desired target site in a body cavity.
- the insertion shape detection device 7 In a state where the insertion shape detection probe 1 and the insertion portion 11 are arranged at a desired target site in the body cavity, for example, the position immediately before the cecum 59 as described above, the insertion shape detection device 7 The pump 7a is driven and controlled, and the fluid inside the insertion shape detection probe 1 is sucked toward the pump 7a. As a result, the balloon 31 changes to a contracted state (see FIG. 3). Then, the insertion shape detection probe 1 is drawn into the treatment instrument communication channel 15. From this, preparations for carrying out observation and inspection using the insertion section 11 of the endoscope 3 are completed.
- FIGS. 31 to 38 are diagrams for explaining another operation according to the modification of the first embodiment of the present invention.
- FIGS. 31, 33, 35, and 37 show the large intestine and the intestinal tract thereof.
- FIG. 4 is a diagram showing a state of an endoscope insertion assisting probe (insertion shape detection probe 1) and an endoscope insertion portion to be inserted into the device.
- the insertion shape of the endoscope insertion assistance probe (insertion shape detection probe 1) in each of the states shown in FIGS. 31, 33, 35, and 37 is displayed in FIGS. 32, 34, 36, and 38.
- FIG. 7 is a diagram showing a display screen displayed on a monitor of the inserted shape detection device to be used.
- the balloon 31 was placed in the rectum 52, the sigmoid colon 53, the descending colon 54, the splenic curvature 55, the transverse colon 56, and the liver. It is finally placed at the position immediately before the cecum 59 via the curved 57 and ascending colon 58, and the insertion portion 11A is inserted to the position immediately before the cecum 59 using the display screen 8a as a guide while referring to the display screen 8a.
- the insertion portion 11A in a state in which the insertion shape detection probe 1 is inserted and arranged inside the treatment tool communication channel 15 is inserted into the body cavity of the subject, for example, of the subject. Insert into the rectum 52 from the anus 51 (see Figure 31).
- the balloon 31 is inflated in a predetermined procedure.
- the insertion shape detection probe 1 in a state where the inflated balloon 31 is attached to the distal end is pushed from the treatment instrument insertion port 14 side, and the probe 1 is advanced.
- the balloon 31 of the inserted shape detection probe 1 proceeds smoothly from the rectum 52 to the ascending colon 58 via the sigmoid colon 53, descending colon 54, splenic curvature 55, transverse colon 56, liver curvature 57, and finally the cecum It is placed immediately before 59.
- the state at this time is the state shown in FIG.
- a display screen 8a shown in FIG. 32 is displayed on the monitor 8.
- the insertion shape detection probe 1 is disposed inside the intestinal tract 50 as shown by reference numeral lc in FIG. 32, and the distal end of the insertion portion 11A is disposed at the position shown by reference numeral Id inside the rectum 52. I'm sorry.
- insertion of the insertion portion 11A is started.
- the insertion portion 11A is inserted along the insertion shape detection probe 1 as a guide.
- the insertion shape of the insertion shape detection probe 1 displayed on the display screen 8a (see FIG. 32) of the monitor 8 can be referred to, so that the insertion portion 11A can be easily and smoothly moved to a desired position in the body cavity. It can be inserted to the target site.
- FIG. 33 shows a state where the distal end portion of the insertion portion 11A reaches the descending colon 54 to the splenic curvature 55
- FIG. 34 shows a display screen 8a of the monitor 8 corresponding to this state
- FIG. 35 shows a state where the distal end portion of the insertion portion 11A reaches the ascending colon 58 from the transverse colon 56 through the liver curve 57
- FIG. 36 shows the display screen 8a of the monitor 8 corresponding to this state. is there.
- FIG. 37 shows a state when the distal end portion of the insertion portion 11A reaches the cecum 59
- FIG. 38 shows a display screen 8a of the monitor 8 corresponding to this state.
- the balloon 31 is moved in the same procedure as the above-described procedure. It is in a contracted state (see Fig. 3). Then, the insertion shape detection probe 1 is drawn into the treatment instrument communication channel 15. From this, preparations for conducting an observation inspection using the insertion portion 11A of the endoscope 3 are completed.
- an endoscope insertion section provided with a tip position detection section 45 for detecting the position of the tip of the insertion section 11A allows the insertion shape detection probe 1 to be inserted into the insertion shape.
- the position of the distal end of the section 11A is displayed on the monitor 8, and while referring to the display screen 8a, the insertion section 11A of the endoscope 3 is safely and securely inserted into the intestinal tract 50 in the body cavity, and is advanced.
- the insertion shape detection device system configured as described above.
- the insertion shape detection probe 1 is inserted into the intestinal tract by providing the balloon 31 at the distal end of the insertion shape detection probe 1 as an endoscope insertion assistance probe.
- the configuration of the distal end of the insertion shape detection probe 1 is not limited to the balloon 31 in the above-described first embodiment, but may be replaced by another. Various configurations are possible. These configurations will be described in detail in the following embodiments.
- FIG. 39 is an enlarged view of a main part, showing an enlarged end portion of an endoscope insertion assisting probe (insertion shape detection probe) according to the second embodiment of the present invention.
- FIG. 40 is a diagram showing a state when the endoscope insertion assisting probe (insertion shape detection probe) of FIG. 39 is inserted into the intestinal tract.
- the insertion shape detection probe 1A which is an endoscope insertion assistance probe of the present embodiment, has a configuration in which the balloon 31 is omitted from the insertion shape detection probe 1 in the above-described first embodiment. . Therefore, the description of the same configuration as that of the first embodiment will be omitted, and only different points will be described below.
- the insertion shape detection probe 1A of the present embodiment is provided with a hydrophilic lubricating coating treatment 31A for smoothing the surface to improve the insertability in a predetermined range of the outer surface of the outer sheath 20 at the distal end portion. ing. Thereby, the distal end portion of the insertion shape detection probe 1A functions as a distal end guide.
- the insertion shape detection probe 1A of the present embodiment has the hydrophilic lubricating coating treatment 31A applied to the distal end portion, the insertion shape detection probe 1A is connected to the intestinal tract as shown in FIG.
- the tip When it is inserted into the inside of the intestine 50, the tip can easily climb over the protrusion 50b or the like of the intestinal wall 50a and can always be inserted smoothly without entering into the unevenness of the intestinal wall 50a.
- the force for performing the hydrophilic lubrication coating treatment 31A only in a predetermined range of the distal end portion of the insertion shape detection probe 1A is not limited thereto.
- a hydrophilic lubricating coating treatment may be applied to the entire insertion shape detection probe.
- FIG. 41 shows a modification of the second embodiment of the present invention, and is an enlarged view of a main part mainly showing a distal end portion and a proximal end portion of an endoscope insertion assistance probe (insertion shape detection probe).
- FIG. 41 shows a modification of the second embodiment of the present invention, and is an enlarged view of a main part mainly showing a distal end portion and a proximal end portion of an endoscope insertion assistance probe (insertion shape detection probe).
- a hydrophilic lubricating coating treatment 31B is applied to the outer surface of the outer sheath 20 reaching the connector portion 22 at the distal end force.
- the distal end portion of the inserted shape detection probe 1B functions as a distal end guide.
- Other configurations are completely the same as those of the above-described second embodiment.
- the outer surface of the balloon 31 in the above-described first embodiment may be subjected to the hydrophilic lubrication coating treatment of the present embodiment.
- a hydrophilic lubricating coating treatment can further improve the insertability.
- the insertion shape detection probe 1A Force for directly applying hydrophilic lubrication coating treatments 31A and 31B to the outer surface of the outer sheath 20 of the IB.
- the present invention is not limited to this.
- a form shown in FIGS. 42 and 43 may be used.
- FIG. 42 is an exploded configuration diagram separately showing a distal end portion of the insertion shape detection probe of the present embodiment and a cover member attached to the distal end portion.
- FIG. 43 is a configuration diagram showing a state where a cover member is attached to the distal end portion of the insertion shape detection probe.
- the insertion shape detection probe 1C of the present embodiment is provided with a cover member 31C that is provided detachably with respect to the distal end thereof and covers a predetermined range.
- the cover member 31C is a tubular member formed of a thin film member, and formed in a substantially cylindrical shape so as to cover the outer surface of the insertion shape detection probe 1C.
- the outer surface of the cover member 31C is subjected to a hydrophilic lubrication coating process. Accordingly, the distal end portion of the insertion shape detection probe 1C functions as a distal end guide.
- an existing insertion shape detection probe in a general conventional form is used. Other configurations are substantially the same as those of the above-described second embodiment.
- the cover member 31C is provided so as to be detachably attached to the distal end portion of the insertion shape detection probe 1C, the cover member 31C can be used to detect an existing insertion shape in a general form. Only by attaching the probe 1C to the tip of the probe, the insertability of the probe 1C itself can be easily improved. Further, since a new cover member 31C can be attached each time it is used, if the force bar member 31C is a disposable type, the steps of cleaning the cover member 31C and the like can be simplified. You can also.
- FIGS. 44 to 47 show a fourth embodiment of the present invention
- FIGS. 44 and 45 show enlarged end portions of an endoscope insertion assisting probe (insertion shape detection probe) of this embodiment.
- FIG. 44 is a cross-sectional view schematically showing the tip of the insertion shape detection probe.
- FIG. 45 is an enlarged perspective view of a main part showing the distal end of the insertion shape detection probe in a further enlarged manner.
- FIGS. 46 and 47 show the insertion shape detecting probe of the present embodiment. 46 is a view showing a state in which is inserted into the intestinal tract, FIG. 46 is a perspective view, and FIG. 47 is a sectional view taken along line 47-47 in FIG.
- the configuration of the present embodiment is substantially the same as that of the above-described first embodiment, and is different in that the balloon 31 provided in the above-described first embodiment is omitted. Therefore, also in the present embodiment, the same components as those in the above-described first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Only different configurations will be described below.
- an insertion shape detection probe 1D which is an endoscope insertion assisting probe of the present embodiment, has a predetermined portion near the distal end thereof in the first embodiment. Similar to the insertion shape detection probe 1 of the embodiment (see FIG. 3), a plurality of through-holes IDa serving as fluid ejection portions are formed. Although not shown, a slight gap lb is formed between the inner wall surface of the outer sheath 20 of the insertion shape detection probe 1D and each of the source coils and the like (not shown; see reference numeral 21 in FIG. 3). ing. The gap lb also continuously penetrates the distal end force of the insertion shape detection probe 1D to the base end connector (not shown; see reference numeral 22 in FIG. 2).
- the insertion shape detection device 7 (see FIG. 7) provided with a pump 7a that supplies air or water to the inside of the insertion shape detection probe 1D and its drive control circuit and the like. 1) is connected via the connector section 22.
- the fluid is supplied or fed from the side of the pump 7a to the inside of the insertion shape detection probe 1D via the connector 22. It has become.
- This fluid passes through the gap lb of the insertion shape detection probe 1D, reaches the tip of the insertion shape detection probe 1D, and is finally discharged from the plurality of through holes 1Da.
- the insertion shape detection probe 1D is always in a state in which the intestinal wall 50a is separated from the intestine wall 50a, so that the insertion shape of the intestinal tract 50 smoothly advances. Therefore, the distal end portion of the insertion shape detection probe 1D functions as a distal end guide.
- the operation when inserting the insertion shape detection probe 1D of the present embodiment configured as described above into a body cavity is as follows. That is, first, the insertion shape detection probe 1D of the present embodiment is inserted into the body cavity of the subject by a predetermined procedure such as the procedure (see FIGS. 6 to 21 and the description thereof) described in the first embodiment. Into the intestinal tract 50). [0128] After the insertion shape detection probe ID is inserted into the intestinal tract 50, the drive of the pump 7a is controlled by the insertion shape detection device 7, and the supply of fluid or water to the inside of the insertion shape detection probe 1D is started. I do.
- this fluid is discharged from the plurality of through-holes IDa at the distal end through the gap 1b of the insertion shape detection probe 1D.
- the fluid is discharged from the through-hole IDa toward the intestinal wall 50a of the intestinal tract 50 as shown by the arrow “Air” in FIGS. 46 and 47.
- the insertion shape detection probe 1D is always in a state of being separated from the intestinal wall 50a, and thus smoothly inserts into the intestinal tract 50 and proceeds.
- the inserted shape detection probe 1D inserted into the intestinal tract 50 is separated from the intestinal wall 50a by the fluid discharged from the through-hole IDa, so that the intestinal wall 50a is smoothly prevented from being damaged.
- the insertion shape detection probe 1 can be inserted along the curved shape of the intestinal tract 50.
- the insertion shape detection probe 1D of the above-described fourth embodiment may be configured by adding a cover member as in the above-described third embodiment.
- FIG. 48 is an enlarged view of a main part showing a distal end portion of an insertion shape detection probe according to a modified example of the fourth embodiment.
- a cover member 31D which is also a thin film-shaped member, is provided at the distal end of the insertion shape detection probe 1D of the modification of the present embodiment. As described in the third embodiment, the cover member 31D is provided to be detachably attached to the tip of the probe 1D. The outer surface of the cover member 31D is subjected to a hydrophilic lubrication coating process. When the cover member 31D is attached to the tip end of the insertion shape detection probe 1D, the cover member 31D includes the insertion shape detection probe 1D at a position corresponding to the through hole IDa. A through-hole 31Da, which is the same fluid discharge part as above, is provided. Other configurations are exactly the same as those of the above-described fourth embodiment.
- the cover member 31D having the outer surface subjected to the hydrophilic lubricating coating treatment is detachably provided at the distal end portion, so that the insertability is further improved. Can be improved.
- the force configured to include the cover member 31D having the outer surface subjected to the hydrophilic lubrication coating treatment is not limited to this.
- the hydrophilic lubricating coating treatment may be directly applied to the outer surface of the outer sheath within a predetermined range of the distal end portion of the outer sheath or the entire outer surface up to the distal end force base end of the outer sheath.
- FIG. 49 is an enlarged view of a main part showing a part of an endoscope insertion assisting probe (insertion shape detection probe) according to a fifth embodiment of the present invention.
- the configuration of the present embodiment has substantially the same configuration force as that of the above-described fourth embodiment.
- the form of the through-hole formed in the distal end portion of the force insertion shape detection probe, and the fluid discharged from the distal end portion Is different in that a separate flow path is provided. Therefore, in the present embodiment, the same components as those in the above-described fourth embodiment are denoted by the same reference numerals, and description thereof will be omitted. Only different configurations will be described below.
- the insertion shape detection probe 1E which is an endoscope insertion assisting probe of the present embodiment, is an existing insertion shape detection probe of a general conventional form as shown in the third embodiment, for example.
- the probe main body is configured in such a manner that the cover member 31E for covering the entirety is applied to the distal end portion with the force applied to the proximal end portion.
- the cover member 31E is disposed so as to cover the outer surface of the probe main body from the distal end to the proximal end as described above. In this case, a gap is formed between the outer surface of the probe main body and the inner surface of the cover member 31E so that the fluid can flow smoothly. This gap continuously extends from the distal end portion to the vicinity of the proximal end portion of the insertion shape detection probe 1E.
- an opening 31Eb formed at an acute angle toward the rear with respect to the axial direction of the probe main body is formed in a predetermined portion near the base end of the cover member 31E.
- a tube 7b to which a fluid from a pump 7a of the insertion shape detecting device 7 is supplied is connected to the opening 31Eb.
- the insertion shape detection device 7 performs drive control of the pump 7a, for example, control to increase or decrease the supply amount of fluid, and the like.
- a plurality of through-holes IEa are formed near the distal end of the cover member 31E.
- the opening direction of the through hole IE is formed so as to be inclined toward the base end side of the probe main body with respect to the axial direction of the probe main body. In other words, the opening direction of the through hole IE is formed to have an acute angle toward the rear with respect to the axial direction of the probe main body.
- the fluid supplied by the drive control of the pump 7a of the insertion shape detection device 7 reaches the distal end portion of the insertion shape detection probe 1E via the gap between the tube 7b and the cover member 31E. Is discharged from each through hole IE.
- each through hole IE is formed with an acute angle toward the rear as described above. Accordingly, the fluid discharged from each through hole IE is discharged toward the rear of the distal end of the insertion shape detection probe 1E.
- the ejection force of the fluid becomes a driving force for moving the inserted shape detection probe 1E forward.
- the discharge amount of the fluid from the through hole IE is adjusted.
- the amount of advance of the insertion shape detection probe 1E can be adjusted.
- the distal end portion of the insertion shape detection probe 1E functions as a distal end guide.
- Other configurations are substantially the same as those of the above-described fourth embodiment.
- the same effects as in the above-described fourth embodiment can be obtained. Further, in the present embodiment, since the flow path of the fluid is separately secured, the flow rate of the fluid can be more reliably adjusted, and thus, the discharge amount from the through hole IE can be adjusted. This makes it possible to reliably adjust the amount of progress of the inserted shape detection probe 1E.
- each through-hole lEa is formed to have an acute angle toward the rear and the discharge direction of the fluid discharged from each through-hole lEa is directed rearward, the insertion is performed. It can be used as a driving force for the shape detection probe 1E.
- a hydrophilic lubricating coating treatment is directly applied to the outer surface of the cover member 31E, or a thin film-shaped member in which the hydrophilic lubricating coating treatment is applied to the outer surface. If it is configured to arrange the Can be given.
- FIGS. 50 to 52 show an endoscope insertion assisting probe (insertion shape detection probe) according to the sixth embodiment of the present invention
- FIG. 50 shows the tip of the insertion shape detection probe of the present embodiment
- FIG. 4 is an exploded configuration diagram showing a part and a cover member attached to the tip part separately.
- FIG. 51 is a configuration diagram showing a state where a cover member is attached to a distal end portion of the insertion shape detection probe.
- FIG. 52 is a conceptual diagram showing the action of the fluid flowing inside the inserted shape detection probe in the state of FIG. 51.
- the configuration of the present embodiment has substantially the same configuration as the first embodiment described above.
- a cover member to be attached to the distal end portion of the insertion shape detection probe is provided in place of the force and balloon 31, and the insertion is performed.
- the fluid flowing inside the shape detection probe contains a lubricant. Therefore, in the present embodiment, the same components as those in the above-described first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Only different configurations will be described below.
- the insertion shape detection probe 1F of the present embodiment is provided with a cover member 31F that is detachably provided at the tip end thereof and covers a predetermined range.
- the cover member 31F also serves as a flexible and stretchable thin film-like elastic member, and is formed in a substantially cylindrical shape so as to cover the outer surface of the insertion shape detection probe 1F.
- a plurality of micro holes 31Fa are formed in the cover member 31F, and in a state where the cover member 31F is contracted (the state of FIG. 50), the plurality of micro holes 31Fa maintain a closed state, When the cover member 31F is extended (the state shown in FIGS. 51 and 52), the plurality of minute holes 31Fa are formed so as to be open.
- a plurality of through holes IFa are formed in the vicinity of the distal end of the insertion shape detection probe 1F.
- the through-hole IFa is a through-hole through which the fluid 31Fb reaching the distal end through the inside of the insertion shape detection probe 1F is discharged.
- the fluid 31Fb is supplied with air or water from the side of the pump 7a toward the inside of the insertion shape detection probe 1F.
- the fluid 31Fb reaches the distal end of the insertion shape detection probe 1F through a gap lb (flow path), and is finally discharged from a plurality of through holes IFa.
- the fluid 3Fb discharged from the through-hole lFa expands the cover member 31F.
- the cover member 31F changes from a contracted state shown in FIG. 50 to a substantially spherical shape as shown in FIGS. 51 and 52. In this case, when the cover member 31F is in the contracted state shown in FIG.
- the force at which the plurality of micro holes 31Fa are in the closed state is changed when the cover member 31F changes to a substantially spherical shape as shown in FIGS. 51 and 52.
- the plurality of micropores 3 lFa are opened.
- the inside of the expanded cover member 31F is filled with the fluid 31Fb, and is leached little by little from the plurality of micro holes 31Fa to cover the outer surface of the cover member 31F. .
- the fluid 31Fb is configured to include a lubricant having lubricity in addition to a predetermined gas or a predetermined fluid. Therefore, the lubricant contained in the fluid 31Fb is leached from the plurality of minute holes 31Fa of the cover member 31F filled with the fluid 3Fb. The lubricant contained in the fluid 31Fb covers the outer surface of the cover member 31F, thereby improving the penetrability of the insertion shape detection probe 1F inside the intestinal tract. Thereby, the distal end portion of the inserted shape detection probe 1F functions as a distal end guide.
- the cover member 31F is provided with the plurality of micro holes 31Fa, and the fluid 3 lFb contains a lubricant or the like. Therefore, by this, it is possible to drive and control the pump 7a of the insertion shape detecting device 7. As a result, the fluid 31Fb is discharged from the through hole IFa at the distal end of the insertion shape detection probe IF, and the cover member 31F is expanded. Along with this expansion, a fluid 31Fb with a lubricant is leached from the minute holes 31Fa of the cover member 31F, which covers the outer surface of the cover member 31F and makes the outer surface smooth. Accordingly, it is possible to further improve the ease of insertion of the insertion shape detection probe 1F into the intestinal tract.
- FIGS. 53 to 55 show a part of an endoscope insertion assisting probe (insertion shape detection probe) according to a seventh embodiment of the present invention, of which FIG. 53 shows the insertion shape of this embodiment.
- FIG. 54 shows a normal state of the detection probe
- FIG. 54 shows a state in which the distal end of the insertion shape detection probe of this embodiment is bent
- FIG. 55 shows a state in which the distal end of the insertion shape detection probe of this embodiment is extended. It is a principal part enlarged view respectively shown.
- the configuration of the present embodiment has substantially the same configuration force as that of the fifth embodiment described above.
- the through-hole of the force cover member is eliminated, and a bellows-shaped portion formed to be extendable and contractible near the distal end is provided. It differs in that it is provided and configured. Therefore, in the present embodiment, the same components as those in the above-described fifth embodiment are denoted by the same reference numerals, and description thereof will be omitted. Only different configurations will be described below.
- the insertion shape detection probe 1G of the present embodiment is different from, for example, an existing insertion shape detection probe of a general conventional form in that the insertion shape detection probe 1G is moved from the distal end to the proximal end.
- the cover member 31G that covers the entire structure is fixed.
- the cover member 31G is provided so as to cover the outer surface of the probe main body with the distal end force applied to the base end as well as in the above-described fifth embodiment.
- a gap is formed between the outer surface of the probe body and the inner surface of the cover member 31G so that the fluid can flow smoothly. This gap is continuously inserted from the distal end to the vicinity of the proximal end of the insertion shape detection probe 1G.
- the cover member 31G itself is formed of a flexible material, and in addition to this, a bellows-like portion 31Ga is formed near the tip of the insertion shape detection probe 1G.
- the inserted shape detection probe 1G can perform a flexible bending operation, and It is formed so that it can be deformed following a fine bent portion in the inside of the body.
- the fluid supplied by driving and controlling the pump 7a of the insertion shape detection device 7 reaches the distal end portion of the insertion shape detection probe 1G via the gap between the tube 7b and the cover member 31G, and accords with the bellows.
- Shape 3 extends the IGa.
- the bellows-like portion 31Ga of the cover member 31G contracts. And return to the original bellows shape.
- Other configurations are substantially the same as those of the above-described fifth embodiment.
- the probe main body is covered with the cover member 31G formed of a flexible material, and the bellows-like portion 3IGa is formed at the distal end thereof.
- a more flexible bending operation can be realized. Therefore, it is possible to improve the followability of a finely bent portion inside the intestinal tract 50, for example, a portion having a complicated shape such as the sigmoid colon, and contribute to the improvement of the insertability of the insertion shape detection probe 1G. it can.
- the distal end portion of the insertion shape detection probe 1G functions as a distal end guide.
- the bellows-like portion 31Ga can be displaced to an extended state.
- the outer shape of the insertion shape detection probe 1G can be made linear and have a certain degree of hardness. Therefore, in a part other than the bent part or in a deep part, it is possible to secure the insertability by setting this state.
- FIGS. 56 to 59 are views each showing a part of an endoscope insertion assisting probe (insertion shape detection probe) according to the eighth embodiment of the present invention.
- FIG. 56 is a cross-sectional view of the probe for assisting insertion of an endoscope (insertion shape detection probe) of the present embodiment in a state where a metal wire is pulled out.
- FIG. 57 is a cross-sectional view of the endoscope insertion assisting probe (insertion shape detection probe) of the present embodiment in a state where the metal wire is inserted to the distal end.
- FIG. 58 is an enlarged perspective view of a main part showing a cut surface cut along the line 58-58 in FIG. Fig.
- FIGS. 60 and 61 are diagrams showing the operation of the endoscope insertion assisting probe (insertion shape detection probe) of the present embodiment. Among them, FIG. 60 is a diagram showing a state when the insertion shape detection probe penetrates a bent portion in a body cavity. FIG. 61 is a diagram showing a state where the insertion shape detection probe penetrates a part other than the bent part in the body cavity.
- the basic idea of the present embodiment is that when inserting the endoscope insertion assisting probe (insertion shape detection probe) into the intestinal tract in a body cavity, the distal end of the insertion shape detection probe is bent at the bent part of the intestine.
- the part is configured to be able to flexibly bend, while in other parts the tip of the insertion shape detection probe is given a certain degree of hardness to obtain good insertability at any part inside the intestinal tract. are doing. Therefore, among the configurations of the present embodiment, illustrations and descriptions of the same configurations as the above-described embodiments are omitted, and only different configurations will be described below.
- the insertion shape detection probe 1H which is an endoscope insertion assistance probe of the present embodiment, is made of flexible silicone or the like having a plurality of lumens as its outer tube.
- the so-called multi-lumen tube 33 is applied.
- the multi-lumen tube 33 has a first lumen lHa in which various constituent members constituting the insertion shape detection probe in each of the above-described embodiments are disposed, and a predetermined hardness.
- a second lumen lHb through which a provided metal wire (wire, hard wire) 32 is inserted so as to be able to advance and retreat in the axial direction is formed.
- the second lumen lHb is inserted from the vicinity of the distal end to the vicinity of the proximal end inside the insertion shape detection probe 1H, and is inserted into a predetermined portion near the proximal end as shown in FIG. 59.
- An opening lHc is formed in the second lumen lHb to allow the metal wire 32 to pass therethrough. Then, the metal wire 32 is inserted into the second lumen lHb from the opening lHc, and the metal wire 32 is advanced and retracted in the direction of the arrow X shown in FIG. 59. The hardness near the tip can be changed. Thereby, the distal end portion of the insertion shape detection probe 1A functions as a distal end guide.
- Other basic configurations are described above. This is substantially the same as each embodiment.
- the insertion shape detection probe 1H when the insertion shape detection probe 1H is inserted into the body cavity from the anus 51, the bending in the intestinal tract 50 in the body cavity is performed.
- a site for example, a site such as the sigmoid colon 53, the metal wire 32 is moved in the pulling direction inside the second lumen 1Hb, and is retracted from the vicinity of the distal end of the insertion shape detection probe 1H.
- the tip end of the insertion shape detection probe 1H can be made flexible and easily curved. Therefore, it is possible to ensure a good insertion property at the bent portion.
- by adjusting the position where the metal wire 32 is pulled out it is possible to arbitrarily set a range for adjusting the hardness in the vicinity of the tip of the probe 1H.
- the metal wire 32 is inserted to the vicinity of the distal end of the second lumen lHb. I do.
- the distal end of the inserted shape detection probe 1H can be configured to have a certain degree of hardness. Therefore, it is possible to ensure a good insertion property in a part other than the bending part.
- a multilumen tube 33 having two lumens is used, and a force configured to allow a single metal wire 32 to freely advance and retreat is not limited to this.
- a lumen may be formed to allow a plurality of metal wires to pass through. In this case, it is easy to adjust the hardness of the distal end portion of the insertion shape detecting probe 1H to be appropriate depending on the number of the plurality of metal wires.
- the hardness of the distal end portion of the insertion shape detection probe 1H may be adjusted by preparing a plurality of metal wires having different diameters or different wire materials.
- FIG. 62 is a cross-sectional view schematically showing a main part of an internal configuration near the distal end of an endoscope insertion assisting probe (insertion shape detection probe) according to a ninth embodiment of the present invention.
- the configuration of the present embodiment also has substantially the same configuration power as the above-described eighth embodiment.
- the hard part near the distal end of the insertion shape detection probe 1H is used.
- the metal wire 32 was configured to pass through the second lumen lHb of the multi-lumen tube 33 (see FIG. 56 and the like).
- a shape memory material is used for a core wire (see reference numeral 23 in FIG. 2 in the above-described first embodiment) in a normal insertion shape detection probe. Configuration. Therefore, in the present embodiment, the same components as those in the above-described eighth embodiment are denoted by the same reference numerals, and description thereof will be omitted. Only different configurations will be described below.
- the basic configuration of the insertion shape detection probe 1J of the present embodiment has the same configuration power as a general conventional insertion shape detection probe. That is, the insertion shape detection probe 1J is mainly provided with a plurality of coil devices for generating a magnetic field inside the outer sheath, a signal line connected to the coil device, and a core wire 34 for adhesively fixing the coil device. It is configured.
- the core wire 34 of the present inserted shape detection probe 1J for example, a shape memory material storing a linear state is used. Therefore, for example, when the insertion shape detection probe 1J is inserted into a body cavity, at a bent portion such as the sigmoid colon in the intestinal tract, after the probe tip is flexibly bent and passed through the bent portion. At a part other than the bent part such as the descending colon, heat or an electric signal is applied to the core wire 34 so that it can be easily returned to a shape memory state (in this case, a linear state). You can do it. Thereby, the distal end portion of the insertion shape detection probe 1J functions as a distal end guide.
- Other basic configurations are substantially the same as those of the above-described seventh embodiment.
- the same effects as in the eighth embodiment can be obtained. Also, since the desired effect can be realized only by configuring the core wire 34 in the insertion shape detection probe 1J using a shape memory material, it is possible to easily manufacture without changing existing production equipment. . Therefore, it is possible to easily contribute to improvement of productivity and reduction of manufacturing cost.
- the core wire is made of a shape memory material.
- the present invention is not limited to this.
- the outer sheath may be made of a material obtained by folding a shape memory material. Yes. A modification of such a mode will be described below with reference to FIG.
- FIG. 63 is a cross-sectional view schematically showing a main part of an internal configuration near a distal end portion of an endoscope insertion assistance probe (insertion shape detection probe) according to a modification of the ninth embodiment of the present invention. It is a figure.
- the basic configuration of the insertion shape detection probe 1K of the present embodiment is the same as that of the insertion shape detection probe 1J of the ninth embodiment described above.
- the core wire 34 of the insertion shape detection probe U for example, a core wire similar to that of a general conventional insertion shape detection probe is applied.
- the outer sheath 34A of the insertion shape detection probe 1K in this modified example is formed using a material obtained by folding a shape memory material. Thereby, the distal end portion of the inserted shape detection probe 1K functions as a distal end guide.
- Other basic configurations are substantially the same as those in the ninth embodiment.
- Fig. 64 is an enlarged view of a main part, showing an enlarged distal end portion of an endoscope insertion assistance probe (insertion shape detection probe) according to the tenth embodiment of the present invention.
- the basic configuration of the present embodiment is substantially the same as that of the above-described second embodiment, and a spherical endoscope is provided at the distal end of the endoscope insertion assisting probe (insertion shape detection probe).
- the difference is that the members are fixedly provided. Therefore, the description of the same configuration as that of the second embodiment will be omitted, and only different points will be described below.
- a solid spherical member 35 as a leading end guide is fixedly provided at the distal end.
- the spherical member 35 those having high surface slidability and light weight, for example, Teflon (registered trademark), Dyuracon, polysalfone, polyphenylsulfone, etc. are applied.
- Teflon registered trademark
- Dyuracon polysalfone
- polyphenylsulfone etc.
- the field of view of the observation screen is not obstructed when an endoscope (3; see FIG. 1) is used.
- the diameter of the spherical member 35 is larger than the diameter of the probe body.
- the diameter is set to about 10 to 30 mm, preferably about 10 to 20 mm.
- the spherical member 35 may have an elliptical shape other than a perfect circle as shown in FIG.
- the shape of the distal end guide may be a shape like a balloon shown in FIG. 4 or a shape in which the distal end of a cone is rounded and formed in an R shape.
- the distal end of the probe main body is embedded in the spherical member 35.
- the hydrophilic shape lubrication coating treatment 31A applied to the outer surface of the exterior case 20 in the insertion shape detection probe 1A of the second embodiment is omitted in the insertion shape detection probe 1L of the present embodiment.
- Other configurations are the same as those of the above-described first embodiment.
- the spherical member 35 is provided at the distal end portion. Therefore, when the insertion shape detection probe 1L is inserted into the intestinal tract in a body cavity, the insertion shape detection probe 1L has the distal end portion. The spherical member can easily get over the irregularities on the intestinal wall and can be inserted smoothly without entering the irregularities.
- the spherical member 35 disposed at the distal end portion of the insertion shape detection probe 1L may be subjected to the hydrophilic lubrication coating treatment 35a on the entire outer surface thereof.
- a hydrophilic lubricating coating process 35a is applied to the entire outer surface of a spherical member 35 which is a tip guide fixed to the tip of the insertion shape detection probe 1M. Make up. In such a configuration, smoother insertability can be obtained by the action of the hydrophilic lubricating coating treatment 35a.
- the surface treatment applied to the outer surface of the spherical member 35 is not limited to the lyophilic lubricating coating treatment 35a shown in the above-described modified example.
- the spherical member 35 The lubricant may be leached out of the inside.
- a hollow spherical member 35A may be used instead of the solid spherical member 35 as in another modified example shown in FIG. #2.
- hydrophilic lubricous coating is applied to the entire outer surface of the spherical member 35A, which is a tip leader fixed to the distal end of the insertion shape detection probe 1N, as in the above-described modified example. It is configured with processing 35a. In the case of such a configuration, the weight of the spherical member 35A is reduced, so that it is possible to more easily contribute to improvement of the insertability.
- FIGs. 67 and 68 are enlarged views of a main part showing an enlarged end portion of an endoscope insertion assisting probe (insertion shape detection probe) according to the eleventh embodiment of the present invention.
- FIG. 67 is a cross-sectional view showing a state where a spherical member fixed to the distal end portion of the insertion shape detection probe is disassembled.
- FIG. 68 is a cross-sectional view showing a state in which a spherical member is attached and fixed to the distal end of the insertion shape detection probe.
- the basic configuration of the present embodiment also has substantially the same configuration power as the above-described tenth embodiment and its two modifications.
- the spherical member fixed to the distal end of the endoscope insertion assistance probe (insertion shape detection probe) will be described in detail.
- the insertion shape detection probe 1P of the present embodiment has a hollow spherical member 36, which is a leading end guide, fixed to the distal end.
- This spherical member 36 is formed by combining two members of hemispherical members 36A and 36B. Screw portions 36Aa and 36Ba are formed on each of the two hemispherical members 36A and 36B, and are screwed together by screwing them together.
- FIG. 68 shows the spherical member 36 in a state where the two hemispherical members 36A and 36B are screwed together.
- the spherical member 36 is disposed so that the probe main body lPa is embedded therein.
- a concave portion 36Ab is formed on the inner surface of one hemispherical member 36A, into which the distal end portion of the probe main body lPa fits.
- the other hemispherical member 36B has a through hole 36Bb through which the tip of the probe main body 1 Pa passes.
- a retaining member 37 that also has a force, such as a heat-shrinkable tube, is provided.
- the retaining member 37 is provided on the outer peripheral surface of the probe lPa when the probe main body lPa is in a state of passing through the concave portion 36 Ab and the through hole 36Bb.
- the retaining member 37 is compressed between the concave portion 36Ab and the through hole 36Bb. This compression force is the diameter of the probe body lPa Acting in the direction, the probe body lPa is prevented from being pulled out in the axial direction.
- the spherical member 36 can be securely fixed to the distal end portion of the probe main body lPa.
- the endoscope insertion assisting probe is inserted into the body cavity in advance before the endoscope is inserted into the body cavity. Then, the endoscope insertion assisting probe is used in a state of being inserted through, for example, a forceps channel of the endoscope. Then, after inserting the endoscope insertion assisting probe into the body cavity of the subject, the endoscope is inserted into the body cavity using the probe as a guide. Therefore, the fact that the spherical member according to the above-described eleventh embodiment is always present within the field of view of the endoscope impedes the observation screen when inspecting or observing the body cavity with the endoscope. This can be a factor.
- FIG. 69 and Fig. 70 are enlarged views of a main part, showing an enlarged distal end portion of an endoscope insertion assisting probe (insertion shape detection probe) according to a twelfth embodiment of the present invention.
- FIG. 69 is a cross-sectional view showing a state in which a spherical member fixed to the distal end of the inserted shape detection probe and the probe main body are separated.
- FIG. 70 is a cross-sectional view showing a state where a spherical member is attached and fixed to the tip end of the insertion shape detection probe.
- the basic configuration of the present embodiment also has substantially the same configuration power as the tenth embodiment and the two modifications thereof.
- the spherical member fixed to the distal end of the endoscope insertion assistance probe insertion shape detection probe
- the insertion shape detection probe 1Q of the present embodiment is configured by a probe main body lQa and a spherical member 35B as a distal end guide.
- the distal end of the probe main body lQa is fixedly provided with a tip 38A having a convex portion directed toward the outer periphery and formed by an elastic member.
- the spherical member 35B has a through hole 35Bb penetrating the outer wall surface, and an elastic portion fixed to the inner wall surface facing the through hole 35Bb. Material 35Ba is formed.
- the elastic member 35Ba is provided with a fitting hole 35Bc having a sectional shape substantially the same as the tip 38A.
- the tip 38A of the probe main body lQa penetrated through the through hole 35Bb fits into the fitting hole 35Bc.
- the protrusion of the tip 38A fits into the recess of the fitting hole 35Bc. From this, the spherical member 35B and the probe body lQa are formed integrally. The state at this time is the state shown in FIG.
- the probe main body lQa is in a state of being passed through the forceps channel of the endoscope (3; see Fig. 1), and the distal end of the probe main body lQa also slightly projects the distal end force of the endoscope insertion section.
- a spherical member 35B is fixedly mounted on the tip of the probe main body lQa by the above-mentioned fitting means.
- the spherical member 35B and the probe main body lQa are separated, and the spherical member 35B falls off. Accordingly, the spherical member 35B in the observation field at the distal end of the endoscope insertion portion is thus separated, so that the spherical member 35B does not obstruct the observation field. Note that the dropped spherical member 35B is discharged by a natural excretion operation due to peristalsis in the body cavity.
- the insertion shape detection probe 1Q is configured such that the probe main body lQa and the spherical member 35B can be freely detachably attached to the insertion shape detection probe 1Q.
- the spherical member 35B was removed, so that the endoscope observation operation to be performed later without obstructing the observation field of view of the endoscope insertion part It can be performed reliably and well.
- the probe main body 1Qa and the spherical member 35B in the insertion shape detection probe 1Q are configured to be separable, and when the two are separated in the body cavity, the spherical member 35B falls into the body cavity. However, removal from the body cavity is due to spontaneous discharge.
- the probe main body and the spherical member constituting the insertion shape detection probe are configured to be separable, and even if they are separated in the body cavity, the spherical member can be quickly collected without falling off. It is convenient if it comprises. Taking this into consideration, a thirteenth embodiment of the present invention described next will be described.
- FIGs. 71 and 72 are enlarged views of a main part, showing an enlarged end portion of an endoscope insertion assisting probe (insertion shape detection probe) according to a thirteenth embodiment of the present invention.
- FIG. 71 is a cross-sectional view showing a state where a spherical member is attached and fixed to the distal end portion of the insertion shape detection probe.
- FIG. 72 is a cross-sectional view showing a state in which a spherical member fixed to the distal end of the insertion shape detection probe and the probe main body are separated.
- the basic configuration of the present embodiment also has substantially the same configuration power as the tenth embodiment and the two modifications thereof.
- the spherical member fixed to the distal end of the endoscope insertion assistance probe insertion shape detection probe
- the insertion shape detection probe 1R of the present embodiment is configured by a probe main body IRa and a spherical member 35C that is a tip leader.
- the distal end of the probe body IRa is fixedly provided with a tip 38C having a convex portion directed toward the outer periphery and formed of an elastic member.
- the spherical member 35C is formed with a through hole 35Cb penetrating through the outer wall surface and an elastic member 35Ca fixed on the inner wall surface facing the through hole 35Cb.
- the elastic member 35Ca is provided with a fitting hole 35Cc having a sectional shape substantially the same as that of the tip 38C.
- the tip 38C of the probe main body IRa penetrated through the through hole 35Cb fits into the fitting hole 35Cc.
- the projection of the tip 38C fits into the recess of the fitting hole 35Cc.
- the spherical member 35C and the probe main body IRa are integrally formed.
- the state at this time is the state shown in FIG. [0219]
- one end of the thread-like member 38Ca is fixed to the fixed portion 35Cd on the inner wall surface side of the spherical member 35C.
- the other end of the thread member 38Ca is fixed to the tip of the tip 38C.
- the spherical member 35C and the probe main body IRa are in a state of being connected by the thread-like member 38Ca.
- the spherical member 35C falls off the distal end portion of the endoscope insertion portion and separates therefrom, and the spherical member 35C does not obstruct the observation field of view.
- the spherical member 35C separated from the probe body IRa is connected to the probe body IRa by the thread-like member 38Ca, it moves with the operation of pulling the endoscope insertion part out of the body cavity while performing observation and inspection.
- the endoscope insertion portion is pulled out of the body cavity, the endoscope is discharged out of the body cavity together with the endoscope insertion portion.
- the same effects as those of the twelfth embodiment can be obtained.
- the probe main body IRa and the spherical member 35C are connected by the thread-like member 38Ca, the endoscope observation inspection of the spherical member 35C in which the force at the distal end of the probe main body IRa is separated in the body cavity is completed. Can be discharged with
- a combination as shown in FIGS. 73 and 74 is used in combination with the endoscope insertion portion.
- Fig. 73 shows a state in which the endoscope insertion assisting probe of the above-described tenth embodiment of Fig. 64 is used by being inserted into a forceps channel of the endoscope.
- the endoscope insertion section 11B in this state is inserted from the anus, for example, and pushed into the intestinal tract by pushing the insertion shape detection probe 1L, and the spherical member 35 at the distal end is inserted into the target site in the body cavity. To reach. Thereafter, the endoscope insertion portion 11B is advanced into the same intestinal tract using the inserted shape detection probe 1L as a guide to reach the site where the spherical member 35 is arranged. As a result, preparations for conducting an observation inspection using the endoscope insertion section 11B are completed.
- FIG. 74 shows a state in which the endoscope insertion assisting probe of the above-described tenth embodiment of FIG. 64 is held and used outside the endoscope insertion section! RU
- a probe holding member 39 for grasping and holding the outer peripheral surface is provided on the outer peripheral side near the distal end portion of the endoscope insertion section 11C.
- the probe holding member 39 is formed by a holding portion 39a having a through hole through which the probe main body lx is inserted, and an arm portion 39b holding the endoscope insertion portion 11C along the outer peripheral surface thereof.
- the insertion shape detection probe 1L which is an endoscope insertion assisting probe, is held by the probe holding member 39 so as to be parallel to the axial direction of the endoscope insertion portion 11C.
- the spherical member 35 fixed to the distal end of the probe body lx of the insertion shape detection probe 1L is disposed forward of the distal end of the endoscope insertion section 11C.
- the endoscope insertion section 11C in this state is inserted from the anus, for example, and inserted into the intestinal tract by pushing the insertion shape detection probe 1L, and the spherical member 35 at the distal end is inserted into the target site in the body cavity. To reach. Thereafter, the endoscope insertion portion 11C is inserted into the same intestinal tract using the inserted shape detection probe 1L as a guide, and reaches the site where the spherical member 35 is arranged. As a result, preparations for conducting observation and inspection using the endoscope insertion section 11C are completed.
- each probe is fixedly provided with a specific form. In this case, assuming that an insertion shape detection probe having a different shape of the tip guide is used depending on the inspection method, it is necessary to prepare a plurality of types of insertion shape detection probes for each shape of the tip guide. .
- the fourteenth embodiment of the present invention to be described next is based on, for example, differences in the preferences of the operator and the shape of the large intestine (for example, when the subject is an adult and a child), examination methods, and the like.
- This is an example of a case in which a plurality of types of tip guides are prepared according to the application, and the plurality of tip guides are selectively detachably attached to one insertion shape detection probe.
- FIGS. 75 and 76 are diagrams showing a schematic configuration of an insertion shape detection probe (endoscope insertion assisting probe) in the insertion shape detection device system according to the fourteenth embodiment of the present invention.
- FIG. 75 is a cross-sectional view showing the internal configuration near the distal end of the insertion shape detection probe (endoscope insertion assisting probe) applied to the present embodiment.
- FIG. 76 is an enlarged view of a main part of the insertion shape detection probe (endoscope insertion assisting probe) shown in FIG.
- This embodiment differs from the first embodiment described above only in the configuration near the distal end of the insertion shape detection probe that is an endoscope insertion assistance probe in the insertion shape detection device system shown in FIG. It is. Therefore, the same configuration as that of the above-described first embodiment will be described using the same reference numerals, detailed description thereof will be omitted, and only different members will be described below.
- the insertion shape detection probe 1S is configured to include a distal end guide 28 on the distal end side of a distal end piece 27S provided at the distal end.
- the tip guide 28 is connected to the tip of the tip piece 27S of the insertion shape detection probe 1S, and is integrated with the tip piece 27S.
- the front force of the front surface 28b is also mainly constituted by the guide wire 28a projecting forward.
- the guide base 28b is provided at a substantially central portion on the base side thereof.
- a threaded portion 28c (for example, a female screw) having a depth dimension is formed toward the distal end side in a direction along the axial direction of the insertion shape detection probe 1S!
- a screw portion 27Sa (for example, a male screw) corresponding to the screw portion 28c is provided at the foremost portion of the tip piece 27S of the insertion shape detection probe 1S in the axial direction so as to project outward.
- the tip piece 27S and the tip guide 28 are integrated in this embodiment. Insertion shape detection probe 1S is formed. Also, by releasing the threaded state between the screw portion 27Sa of the tip piece 27S and the thread portion 28c of the leader base 28b, the tip guide 28 can be easily removed from the tip piece 27S. ing. That is, the tip guide 28 is detachably provided to the tip piece 27S of the insertion shape detection probe 1S.
- a guide wire 28a having a core wire form force is implanted at the front end side.
- the guide wire 28a is formed in a shape in which the distal end side smoothly advances in the traveling direction, for example, a shape bent into an R shape that is convex toward the distal end.
- the configuration is such that when the insertion shape detection probe 1S having the distal end guide 28 attached to the distal end is inserted into, for example, the intestinal tract, it can smoothly progress along the intestinal wall. It is a measure to do.
- the length of the guide wire 28a is appropriately set as necessary in consideration of the application and the like. Other configurations are the same as those of the above-described first embodiment.
- the distal end guide 28 is removably provided to the distal end side of the distal end piece 27S of the insertion shape detection probe 1S.
- Examples of the form of the distal end guide that can be mounted in place of the above-described distal end guide 28 include, for example, those shown in FIGS. 77 and 78.
- Figs. 77 and 78 show two types of tip end guides applied to the insertion shape detection probe (endoscope insertion assisting probe) in the insertion shape detection device system of the fourteenth embodiment, and each of them. It is a principal part enlarged view which expands and shows the attachment site
- the outer shape of the distal end guide 28T in the form shown in FIG. 77 is, for example, the above-described tenth embodiment (see FIG. 64) or the twelfth embodiment (see FIGS. 69 and 70). See above) and above It is formed of a spherical member having substantially the same shape as that of the thirteenth embodiment (see FIGS. 71 and 72), that is, a spherical member having a cross section of a perfect circle or an ellipse.
- the tip leader 28T has a surface with high slidability and light weight, for example, Teflon (registered trademark), Dyuracon, polysulfone, polyphenyl sulfone, or the like.
- a screw portion 28c having a depth dimension toward the distal end side in a direction along the axial direction of the insertion shape detection probe 1S (for example, a female screw) Di) is formed.
- the distal end guide 28U in the form shown in Fig. 78 is an elongated shaft-shaped member having a distal end formed in an R-shape, and is an elastic member having a smaller diameter than the distal end and having a predetermined length.
- 28Ua, and a leader base 28Ub in which the elastic member 28Ua is connected to the body It is assumed that the same material as that of the above-described distal end guide 28T is applied to a material forming the elastic member 28Ua of the distal end guide 28U.
- one of a plurality of types of tip guides (28, 28T, 28U) having an appropriate form is selected and inserted. It will be used by attaching it to the tip of shape detection probe 1S.
- the tip guide (28, 28T, 28U) is detachably attached to the tip piece 27S of the insertion shape detection probe 1S, so that multiple types of tip guides (28, 28T, 28U) can be used.
- a tip guide arbitrarily selected can be mounted and used as needed. Therefore, only prepare multiple types of tip leaders Accordingly, it is possible to easily realize a plurality of types of insertion shape detection probes IS having different shapes at the tip.
- the distal end guide according to the use can be selected, so that the effect of reducing the burden on the operator in the insertion procedure can be obtained.
- the screw portion 28c on the side of the distal end guide (28, 28T, 28U) is a female screw
- the screw portion 27Sa of the distal end piece 27S of the insertion shape detecting probe 1S is a male screw.
- the force showing the example is not limited to this.
- a configuration is possible in which the threaded portion 28c is a male thread and the threaded portion 27Sa is a female thread.
- a fastening means using a screw is used as means for attaching and detaching the distal end guide (28, 28T, 28U) and the distal end piece 27S of the insertion shape detection probe 1S.
- the fitting state between the two members can be relatively easily released and separated.
- the fitting state between the two members needs to be relatively strong. Therefore, it is desirable to apply a component having high hardness while having elasticity, such as a resin member.
- the form of the distal end guide applied in the present embodiment is not limited to those shown in Figs. 76 to 78, and various forms of the distal end guide as required can be applied.
- the shape of the tip leader in other forms may be a balloon-like shape shown in the first embodiment (see FIG. 4), or a shape in which the tip of a cone is rounded and formed in an R shape. And various shapes such as a hemispherical shape with an R-shaped tip available.
- the form of the distal end guide according to the present embodiment can be easily applied to another modification (see FIG. 74) of the above-described tenth embodiment.
- FIG. 79 and FIG. 80 are views showing a fifteenth embodiment of the present invention.
- FIG. 79 is a side view showing the configuration near the distal end of the insertion shape detection probe (endoscope insertion assisting probe) in the present embodiment.
- FIG. 80 is an enlarged view showing the dimples formed on the surface of the distal end guide near the distal end of the insertion shape detection probe (endoscope insertion assisting probe) of FIG. 79. It is a principal part expanded sectional view along a line.
- the insertion shape detection probe IV includes a tip leader having substantially the same shape as that of the above-described tenth embodiment and its modifications, that is, a spherical member having a solid or hollow spherical shape. 35D is located at the tip.
- the spherical member 35D is formed to have a plurality of dimples 35Da on the spherical surface. As shown in FIG. 80, the dimple 35Da is a concave formed in a concave shape toward the inside of the surface of the spherical member 35D.
- the other main components are substantially the same as those in the tenth embodiment.
- the surface of the spherical member 35D comes into contact with the intestinal tract and the like.
- the contact area is reduced.
- the frictional resistance generated between the surface of the spherical member 35D and the contact surface such as the intestinal tract that comes into contact with the surface can be reduced.
- the effect of reducing the frictional resistance when the spherical member 35D contacts and moves on a smooth wall surface in the intestinal tract or the like is remarkable. Therefore, the insertion force can be reduced in the intestinal tract, particularly at a site where a smooth wall surface exists, thereby contributing to an improvement in the insertability.
- FIG. 81 shows a modification of the fifteenth embodiment, and is a side view showing a configuration near the distal end of an insertion shape detection probe (endoscope insertion assisting probe) in this modification.
- the tip provided on the insertion shape detection probe 1W of the present modified example has the same shape force as one of the substantially hemispherical members when the leader is divided into two along a line passing through the substantially center point thereof with respect to the tip leader (spherical member 35D) in the fifteenth embodiment.
- a hemispherical member 35E This hemispherical member 35E is formed to have a plurality of dimples 35Ea on the spherical surface similarly to the above-mentioned spherical member 35D.
- the cross-sectional shape of the dimple 35Ea is the same as the dimple 35Da of the spherical member 35D in the fifteenth embodiment (see FIG. 80).
- the hemispherical member 35E is disposed so that the spherical surface is convex forward at the distal end portion of the insertion shape detection probe 1W.
- Other main components are substantially the same as those of the above-described tenth and fifteenth embodiments.
- the dimple (35Da, 35Ea) formed on the spherical surface of the spherical member (35F, 35D) has a concave surface facing inward from the surface.
- the shape of the force dimple showing an example of the shape is not limited to this.
- the spherical surface of the spherical member itself may be formed by a plurality of curved surfaces having different curvatures, or a plurality of grooves may be formed on the spherical surface of the spherical member itself in a direction along the traveling direction of the leading end. Can be considered.
- the tip leader (35D, 35E) configured in the shape shown in the fifteenth embodiment can also be applied as the shape of the tip leader in the fourteenth embodiment.
- FIG. 82 and FIG. 83 are views showing a sixteenth embodiment of the present invention.
- FIG. 82 is a diagram showing a schematic configuration of an endoscope device (insertion shape detection device system) to which the insertion shape detection probe (endoscope insertion assisting probe) in the present embodiment is applied.
- FIG. 83 is a side sectional view schematically showing the internal configuration near the distal end of the insertion shape detection probe (endoscope insertion assisting probe) shown in FIG. 82.
- the basic concept and the configuration of the present embodiment are substantially the same as the endoscope insertion assisting probe (insertion shape detection probe) of the above-described fifth embodiment (see Fig. 49).
- a spherical member 35F as a distal end guide having a form as shown in FIG. 82 is inserted.
- the difference is that a configuration is provided at the distal end of the shape detection probe IX to generate a propulsive force for the spherical member 35F and the inserted shape detection probe IX.
- the spherical member 35F as the distal end guide according to the present embodiment is formed in a solid or hollow spherical shape similarly to the tenth or fifteenth embodiments described above.
- the spherical member 35F has a through hole 35Fb serving as a fluid ejection part near the side connected to the distal end of the insertion shape detection probe IX. At least one or more through holes 35Fb are formed. As shown in FIG. 83, the through hole 35Fb communicates with a leading fluid channel 35Fa formed inside the spherical member 35F.
- a hollow member is applied to the probe-side fluid conduit 23X as the core wire 23 applied in the above-described first embodiment, and the probe-side fluid conduit 23X is formed therein.
- a tube member which is a separate member may be inserted inside the outer sheath 20 of the insertion shape detection probe IX.
- the probe-side fluid conduit 23X extends from the opening at the front surface of the distal end portion of the insertion shape detection probe IX to the water supply tube connection portion 22Xa of the connector portion 22X provided near the base end.
- One end of the water supply tube 7aa is connected to the water supply tube connection portion 22Xa.
- the other end of the water supply tube 7aa is connected to a discharge port of a water supply pump 7Xa which is a fluid supply device.
- a continuous conduit is formed from the water supply pump 7Xa to the water supply tube 7aa, through the connector 22X of the insertion shape detection probe IX and the opening on the front surface of the distal end of the insertion shape detection probe IX via the probe-side fluid conduit 23X. ing.
- the leading fluid channel 35Fa of the spherical member 35F is connected to the front surface of the distal end of the insertion shape detection probe IX. It is arranged at a position corresponding to the opening. Therefore, when the spherical member 35F and the distal end of the insertion shape detection probe IX are connected to each other, the above-mentioned conduit on the insertion shape detection probe IX side is connected to the leading-side fluid conduit 35Fa of the spherical member 35F. Is done.
- the fluid pumped from the water supply pump 7Xa is discharged from the through hole 35Fb via the above-mentioned conduit and the guide-side fluid conduit 35Fa! /.
- the opening of the through-hole 35Fb is formed so as to be on the base end side of the insertion shape detection probe IX provided with the spherical member 35 at the distal end and facing the outer sheath 20 of the probe IX. ing. Therefore, the fluid discharged toward the rear with the opening force of the through hole 35Fb is also discharged toward the outer sheath 20 of the insertion shape detection probe IX.
- the water supply pump 7Xa drives a predetermined fluid (for example, water or lubricant) in a direction along an arrow WA shown in Fig. 82 by drive control by a predetermined insertion shape detection device (not shown).
- a predetermined fluid for example, water or lubricant
- the fluid is supplied to the spherical member 35F through the above-described conduit of the insertion shape detection probe IX, and is discharged from each through hole 35Fb in a predetermined direction.
- the driving force generated by the discharge force of the fluid is controlled by adjusting the discharge amount of the fluid by the drive control of the water supply pump 7Xa in the same manner as the pump 7a in the above-described fifth embodiment (see FIG. 49). Is like
- the outer surface of the outer sheath 20 be subjected to, for example, a hydrophilic lubrication coating treatment.
- Other configurations are substantially the same as those of the fifth or tenth embodiment described above.
- the drive control of the water pump 7Xa regulates the discharge amount of the fluid.
- the adjustment control it is possible to reliably adjust the amount of progress of the insertion shape detection probe IX and the like.
- the spherical member 35F as the distal end guide, the same effect as that of the above-described tenth or fifteenth embodiment can be obtained.
- the opening force of each through hole 35Fb of the spherical member 35F is also discharged backward.
- the fluid can keep the outer surface near the distal end of the outer sheath 20 in a wet state and can be prevented from being in a dry state. This serves to prevent the self-lubricating properties from deteriorating due to the drying of the hydrophilic lubricating coating. Therefore, the hydrophilic lubricating state can always be maintained on the outer surface of the outer sheath 20, thereby further improving the insertability.
- the distal end guide (spherical shape) is used. It is also possible to apply a dimple formed on the sphere surface of member 35F)!
- the water supply pump 7Xa is used as a means for supplying a fluid, but instead, a manual fluid supply means such as a syringe may be used.
- an insertion shape detection device system to which an insertion shape detection probe is applied is exemplified.
- the present invention is not limited to this, and it is possible to apply the present invention to a general probe in place of the insertion shape detecting probe, which is exactly the same and easily. Even in this case, the effect of the present invention that the insertability of the endoscope insertion assisting probe and the endoscope insertion portion can be improved can be obtained in exactly the same manner.
- the present invention relates to an endoscope insertion assisting probe and an endoscope apparatus to which the probe is applied, and in particular, to inserting an insertion portion of an endoscope into a body cavity.
- the present invention is useful for an endoscope insertion assisting probe for assisting insertion of an endoscope by inserting the endoscope into a body cavity prior to the insertion and an endoscope apparatus to which the probe is applied.
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP05721673.1A EP1731082B1 (en) | 2004-03-31 | 2005-03-30 | Probe for assisting insertion of endoscope and endoscope device using the probe |
CN2005800102714A CN1946328B (zh) | 2004-03-31 | 2005-03-30 | 内窥镜插入辅助用探头以及应用它的内窥镜装置 |
KR1020087012793A KR100889138B1 (ko) | 2004-03-31 | 2005-03-30 | 내시경 삽입 보조용 프로브 및 이것을 적용하는 내시경장치 |
US11/525,761 US8273013B2 (en) | 2004-03-31 | 2006-09-22 | Endoscope insertion assistant probe and applicable endoscope apparatus therefor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004108360 | 2004-03-31 | ||
JP2004-108360 | 2004-03-31 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/525,761 Continuation US8273013B2 (en) | 2004-03-31 | 2006-09-22 | Endoscope insertion assistant probe and applicable endoscope apparatus therefor |
Publications (1)
Publication Number | Publication Date |
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WO2005094662A1 true WO2005094662A1 (ja) | 2005-10-13 |
Family
ID=35063463
Family Applications (1)
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PCT/JP2005/006175 WO2005094662A1 (ja) | 2004-03-31 | 2005-03-30 | 内視鏡挿入補助用プローブ及びこれを適用する内視鏡装置 |
Country Status (6)
Country | Link |
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US (1) | US8273013B2 (ja) |
EP (1) | EP1731082B1 (ja) |
JP (1) | JP4505345B2 (ja) |
KR (2) | KR100884155B1 (ja) |
CN (1) | CN1946328B (ja) |
WO (1) | WO2005094662A1 (ja) |
Cited By (1)
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Also Published As
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KR100889138B1 (ko) | 2009-03-17 |
KR20060135009A (ko) | 2006-12-28 |
CN1946328B (zh) | 2012-04-04 |
JP4505345B2 (ja) | 2010-07-21 |
EP1731082A4 (en) | 2009-09-30 |
KR20080051194A (ko) | 2008-06-10 |
CN1946328A (zh) | 2007-04-11 |
EP1731082B1 (en) | 2019-02-20 |
KR100884155B1 (ko) | 2009-02-17 |
EP1731082A1 (en) | 2006-12-13 |
US20070015966A1 (en) | 2007-01-18 |
JP2005312924A (ja) | 2005-11-10 |
US8273013B2 (en) | 2012-09-25 |
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