Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/07—Endoradiosondes
  • A61B5/073—Intestinal transmitters
• • 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
  • A61B1/00096—Optical elements
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
  • A61B1/00064—Constructional details of the endoscope body
  • A61B1/0011—Manufacturing of endoscope parts
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
  • A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
  • A61B1/041—Capsule endoscopes for imaging
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
  • A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
  • A61B1/05—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances characterised by the image sensor, e.g. camera, being in the distal end portion
  • A61B1/051—Details of CCD assembly
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C33/00—Moulds or cores; Details thereof or accessories therefor
  • B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
  • B29C45/17—Component parts, details or accessories; Auxiliary operations
  • B29C45/26—Moulds
  • B29C45/37—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings

Definitions

• the cutting feed rate is controlled so that no machining traces remain on the mold, or polishing is performed after cutting so that the mold surface is close to a mirror surface (for example, the surface roughness is below the operating wavelength) It is necessary to finish it.
• the mold is smoothed by mirror polishing, there is a problem that the molded product sticks to the mold and peels off accordingly.
• an optical window member for a capsule endoscope that is advantageous for the invention of claim 2 has a substantially hemispherical dome shape and is a part of the exterior of the capsule endoscope. It is obtained and has the said surface treatment part on both the surface and a back surface, It is characterized by the above-mentioned.
• FIG. 2 is a side sectional view showing a configuration of a capsule endoscope according to the present invention.
• FIG. 3 is a top view of the developed rigid-flex wiring board shown in FIG.
• FIG. 4 is a side sectional view showing an example of the configuration of a mold for forming a tip cover.
• the wireless in-vivo information acquiring system includes a display device 4 that monitors an image in the body cavity based on a video signal received by the receiving device 2, and data between the receiving device 2 and the display device 4. Is transferred by wired or wireless connection between the receiving device 2 and the display device 4.
• the receiving device 2 includes a radio unit 2a having a plurality of receiving antennas Al to An attached to an outer surface of the subject 1, and a radio signal received via the plurality of receiving antennas Al to An.
• a receiving main unit 2b for performing the above-described processing, and these units are detachably connected via a connector or the like.
• Each of the receiving antennas Al to An is provided in a jacket on which the subject 1 can be worn, for example, and the subject 1 wears the receiving antennas Al to An by wearing this jacket. May be.
• the receiving antennas Al to An may be detachable from the jacket.
• the capsule endoscope 3 when the capsule endoscope 3 is placed, if there is only one receiving antenna, the capsule endoscope 3 is placed in a position where the transmission signal from the capsule endoscope can be satisfactorily received after the placement. A single antenna may be attached.
• FIG. 2 is a side sectional view showing the configuration of the capsule endoscope 3 according to the present invention
• FIG. 3 is a top view of the developed rigid-flex wiring board shown in FIG.
• the capsule endoscope 3 includes an exterior casing 6 formed in a capsule shape and a function execution means for executing a predetermined function set in the body cavity.
• Illumination means 7 that emits illumination light for illuminating the region to be examined
• imaging means 8 that receives reflected light from the illumination light and images the region to be examined as function execution means
• illumination means 7 and imaging means Control means 9 for performing drive control and signal processing of 8
• storage means 10 for accumulating driving power for driving the function execution means, and image data acquired by the imaging means 8 as function execution means
• Wireless transmission means 20 for wireless transmission is provided.
• the exterior housing 6 is of a size that can be swallowed by a person, and is formed by elastically fitting a substantially hemispherical tip cover 61 and a cylindrical trunk cover 62. .
• Lighting board 71, imaging board 81, switch board 11, power supply board 12 and transmission board as placement board 21 is inserted into a cylindrical body cover 62 having a substantially semi-spherical bottom at the rear end and a circular opening at the front end.
• the front end cover 61 (optical window member) has a substantially hemispherical dome shape, and the rear side of the dome opens in a circular shape.
• the body cover 62 is a member that is located on the rear side of the tip cover 61 and covers the function execution means.
• the body cover 62 is formed integrally with a cylindrical body part 63 and a rear end part 64 having a substantially hemispherical dome shape, and the front side of the body part 63 is opened in a circular shape.
• the body cover 62 is formed of polysulfone or the like that is preferable for ensuring strength, and the illumination unit 7, the imaging unit 8, the control unit 9, and the power storage unit 10 are accommodated in the body 63 and wirelessly transmitted.
• the means 20 is accommodated in the rear end 64.
• a cylindrical joint end 65 is provided along the edge of the opening end.
• a cylindrical joining end portion 66 is provided in the opening portion of the body portion 63 along the edge of the opening end portion.
• Each joining end portion 65, 66 has joining surfaces 65a, 66a that overlap and contact each other inside and outside of the exterior housing 6 when the tip cover 61 and the body cover 62 are joined to each other.
• the joint end 65 of the tip cover 61 is inside the outer casing 6, the outer surface thereof forms the joint surface 65 a, and the joint end 66 of the body cover 62 is outside the outer casing 6.
• the inner surface forms a joint surface 66a, and the outer diameter of the joint surface 65a and the inner diameter of the joint surface 66a are formed substantially coincident with each other.
• Each joint end 65, 66 is formed into a cylindrical shape having a straight angle with a draft angle of 0 degrees at the time of molding, for example, and having substantially the same inner and outer diameters, thereby facilitating mutual joining. .
• a protrusion 65b is formed in an endless shape over the entire circumference
• a groove 66b is formed in an endless shape over the entire circumference.
• the protrusion 65b and the groove 66b are engaged with each other in a state where the joint surfaces 65a and 66a are overlapped.
• the protrusion 65b and the groove 66b constitute a joint holding means for holding the joined state of the tip cover 61 and the body cover 62 by engaging with each other.
• a method for manufacturing the tip cover 61 will be described. As shown in FIG.
• the outer peripheral mold 51 and the inner peripheral mold 53 have substantially hemispherical dome-shaped surfaces 51a and 53a (surface processing portions), and these surfaces 51a and 53a are cut by a cutting device. After that, it is polished.
• An example of this surface is shown in FIGS. 5 and 6 are an enlarged cross-sectional view showing an enlarged surface of the portion B shown in FIG. 4 (surface 53a of the inner peripheral mold 53) after cutting, and an enlarged cross-sectional view showing the enlarged surface after polishing. is there.
• FIG. 5 for example, when the inner peripheral mold 53 for performing the injection molding is covered with a cutting device, a concave processing mark 53 b having a fixed pit is formed on the surface 53 a of the inner peripheral mold 53.
• the processing mark 53b is transferred to the molded product (tip cover 61), it may be transferred to the observation image as flare as described above.
• the surface 53a of the inner peripheral mold 53 after the mirror surface is subjected to surface treatment by irradiating with an ion beam to such an extent that it is slightly roughened as shown in FIG.
• the “surface roughness” may be any of centerline average roughness (Ra), ten-point average roughness (Rz), or maximum height roughness (Rmax).
• the surface 53a of the inner periphery mold 53 is subjected to surface finishing after mirror finishing so that the surface roughness becomes 0.5 nm to 800 nm. This “surface roughness is 0.5 ⁇ ! To 800 nm”.
• the centerline average roughness (Ra), 10-point average roughness (Rz), or maximum height roughness (Rmax) is 0.5 ⁇ ! If it is ⁇ 800 nm, the condition that the surface 53a of the inner peripheral mold 53 has fine and random roughness is satisfied.
• Ra is set to 0.5 nm to 800 nm. Is 1.54 nm.
• the surface 53a of the inner periphery mold 53 is irradiated with the ion beam from the ion source 55 so that the surface 53a is slightly roughened so that fine and random irregularities are generated. Then, the inner peripheral mold 53 is subjected to surface treatment.
• the inner periphery mold 53 is combined with other molds to form the tip cover 61 which is a molded product, the sticking force of the end cover 61 to the inner periphery mold 53 becomes weak, and the inner periphery mold 53 to the end cover 61 becomes easy to peel off.
• the lighting means 7 includes a lighting board 71 formed in a disc shape having a through hole 71a in the center portion, and a front surface of the lighting board 71 (in FIG. 2, the tip cover).
• 61 light emitting diodes provided on the 61 side), for example, six light emitters 72 such as white LEDs, and a chip part 74 constituting a circuit for driving the LED 72 on the rear surface (image board 81 side in FIG. 2).
• the illumination light from the LED 72 is irradiated to the outside through the tip cover 61.
• the image pickup means 8 includes a disk-shaped image pickup substrate 81 and a solid state such as a CCD or CMOS provided on the front surface of the image pickup substrate 81 (on the illumination substrate 71 side in FIG. 2).
• An image sensor 82 and an imaging lens 83 that forms an image of a subject on the solid-state image sensor 82 are provided.
• the imaging lens 83 is provided on the front surface of the solid-state image sensor 82 (on the illumination board 71 side in FIG.
• the movable frame 84a and the fixed frame 84b constitute a focus adjustment mechanism 84 that moves the first lens 83a and the second lens 83b along the optical axis.
• the movable frame 84 a passes through the through hole 71 a of the illumination board 71, and the optical axis of the imaging lens 83 faces the front surface of the illumination board 71.
• the imaging means 8 The range illuminated by the illumination light of the illumination means 7 can be imaged.
• a chip component 85 that constitutes a circuit for driving the solid-state imaging element 82 is provided so as to surround the solid-state imaging element 82.
• the power storage means 10 includes a button-type dry battery 13 such as a silver oxide battery, a switch substrate 11 formed in a disk shape, a reed switch 14, and a power supply control IC 15, and the switch substrate 11 includes a switch unit 16 and a power source unit 18 provided on the front surface of FIG.
• a plurality of button-type batteries 13, for example, two in this embodiment, are arranged in series and the negative electrode cap side is arranged rearward.
• These batteries 13 are not limited to acid-silver batteries, and the number of batteries that can be used, for example, a rechargeable battery or a power generation battery, is not limited to two.
• a contact point 17 formed of a plate panel is provided on the rear surface of the switch board 11, and this contact point 17 contacts the positive electrode can of the button type battery 13 so that the button type battery 13 is biased by the panel panel. Therefore, it is energized to the rear side (power supply board 12 side in Fig. 2).
• the power supply unit 18 includes a power supply substrate 12 formed in a disk shape and a regulator 19 provided on the rear surface of the power supply substrate 12 (the rear end portion 64 side in FIG. 2).
• the regulator 19 performs control such as stepping down, for example, by using the voltage obtained from the button-type battery 13 in order to obtain a constant voltage necessary for the system at all times.
• a contact point that contacts the negative electrode cap of the button-type dry battery 13 is provided on the front surface of the power supply substrate 12 (in FIG. 2, the switch substrate 11 side).
• the power storage means 10 allows a plurality of button type dry batteries 13 to be connected in series between the switch board 11 and the power supply board 12 to supply power to each function execution means. As shown in FIG.
• radio transmission means 20 is formed in a cylindrical shape and has a transmission board 21 having a spatial region therein, and an oscillation circuit 22 provided on one surface of transmission board 21.
• the antenna 23 and the electrode 24 are provided on the other surface of the transmission board 21 (the rear surface on the rear end portion 64 side in FIG. 2).
• the antenna 23 is formed in a coil shape at the approximate center of the rear surface of the transmission board 21.
• the antenna 23 is arranged at the approximate center in the dome-shaped rear end portion 64 of the body cover 62 in the exterior casing 6 of the capsule endoscope 3.
• an associated electronic component (not shown) is disposed, and this electronic component is covered with, for example, a thin metal case.
• the electrode 24 also has a side through hole force formed on the side surface of the transmission board 21 and is electrically connected to the flexible board 31 extending from the front side (DSP 91 side) by solder or conductive grease. Further, as shown in FIG. 9, the flexible substrate 31 is disposed on the transmission substrate 21 while avoiding the coiled antenna 23.
• the wireless transmission means 20 extracts a signal having a constant frequency, amplitude, and waveform mixed by the chip component 92 (semiconductor member) by an oscillation circuit 22 and extracts the extracted signal from an antenna 23 in a capsule type. Send to outside of endoscope 3.
• the illumination board 71, the imaging board 81, the switch board 11, the power supply board 12 and the transmission board 21 also have a rigid board force. As shown in FIG. 3, these rigid boards are provided in such a manner that a series of flexible boards 31 are sandwiched between them, thereby constituting a rigid flexible wiring board 32. That is, the rigid boards are arranged at predetermined intervals in the order of the illumination board 71, the imaging board 81, the switch board 11, the power supply board 12, and the transmission board 21 via the flexible board 31, and are electrically connected to each other. Has been.
• the tip cover 61 is formed by injection molding using the inner peripheral mold 53 whose surface 53a is fine and has random irregularities, so that the inner peripheral mold is formed.
• the tip cover 61 is easily peeled off from the mold 53, and even when the fine unevenness remaining on the mold surface is transferred to the molded product (tip cover 61), the image is captured.
• flare can be prevented and the molding performance of the tip force bar can be improved without impairing the imaging performance of the capsule medical device.
• the surface 53a of the inner periphery mold 53 is treated.
• the surface 51a of the outer periphery mold 51 may be treated. Further, at this time, only one of the inner peripheral mold 53 and the outer peripheral mold 51 may be used, or a further effect may be obtained by processing both.
• the surface 53a of the inner peripheral mold 53 is surface-treated with an ion beam.
• the present invention is not limited to this, and as a modified example, corrosive chemicals such as low
• the surface of the mold having the fine and random roughness described above is obtained by performing the surface force of the mold with a salt solution of ferric acid, nitric acid, acetic acid, phosphoric acid or a mixture thereof. It is also possible to form
• the tip cover 61 is easily peeled off from the inner peripheral mold 53, and the minute unevenness remaining on the mold surface is formed into a molded product (tip cover 61). Even when transferred to, it is possible to prevent the occurrence of flare or the like when taking an image and improve the molding performance of the tip cover without impairing the imaging performance of the capsule medical device.
• Item 2 The method for manufacturing a capsule medical device according to Item 1, wherein the surface treatment step performs ion beam processing in which an ion beam is accelerated to collide with the mold surface.
• Item 2 The method for manufacturing a capsule medical device according to Item 1, wherein the surface treatment step performs a mold surface calorie that corrodes the mold surface with a corrosive chemical.
• the optical window member for a capsule endoscope that is effective in the present invention is introduced into a human body and is useful for a medical observation apparatus that observes a region to be examined. It is suitable for improving the molding performance of the tip cover without impairing the imaging performance of the capsule endoscope.

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• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Surgery (AREA)
• Engineering & Computer Science (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Biomedical Technology (AREA)
• Heart & Thoracic Surgery (AREA)
• Medical Informatics (AREA)
• Molecular Biology (AREA)
• Biophysics (AREA)
• Animal Behavior & Ethology (AREA)
• Physics & Mathematics (AREA)
• Veterinary Medicine (AREA)
• Pathology (AREA)
• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
• Optics & Photonics (AREA)
• Radiology & Medical Imaging (AREA)
• Manufacturing & Machinery (AREA)
• Endoscopes (AREA)
• Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

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ID=37835929

Family Applications (1)

Country Status (6)

Cited By (5)

Families Citing this family (6)

Citations (3)

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• 2005
  • 2005-09-09 JP JP2005263106A patent/JP2007075162A/ja active Pending
• 2006
  • 2006-09-08 AU AU2006288207A patent/AU2006288207B2/en not_active Ceased
  • 2006-09-08 EP EP06797718.1A patent/EP1922982B1/en not_active Not-in-force
  • 2006-09-08 US US11/571,415 patent/US20080319267A1/en not_active Abandoned
  • 2006-09-08 CN CNA2006800323158A patent/CN101257830A/zh active Pending
  • 2006-09-08 WO PCT/JP2006/317864 patent/WO2007029814A1/ja not_active Ceased

Patent Citations (3)

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