WO2012073634A1 - カプセル型医療装置及びその製造方法 - Google Patents
カプセル型医療装置及びその製造方法 Download PDFInfo
- Publication number
- WO2012073634A1 WO2012073634A1 PCT/JP2011/075070 JP2011075070W WO2012073634A1 WO 2012073634 A1 WO2012073634 A1 WO 2012073634A1 JP 2011075070 W JP2011075070 W JP 2011075070W WO 2012073634 A1 WO2012073634 A1 WO 2012073634A1
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- WIPO (PCT)
- Prior art keywords
- battery
- substrate
- medical device
- lens
- housing
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/0011—Manufacturing of endoscope parts
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/555—Constructional details for picking-up images in sites, inaccessible due to their dimensions or hazardous conditions, e.g. endoscopes or borescopes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00011—Operational features of endoscopes characterised by signal transmission
- A61B1/00016—Operational features of endoscopes characterised by signal transmission using wireless means
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00025—Operational features of endoscopes characterised by power management
- A61B1/00027—Operational features of endoscopes characterised by power management characterised by power supply
- A61B1/00032—Operational features of endoscopes characterised by power management characterised by power supply internally powered
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
Definitions
- the present invention relates to a capsule medical device that is introduced into a subject and images an in-vivo image, and a manufacturing method thereof.
- capsule-type medical devices having an imaging function and a wireless communication function have appeared inside a capsule-type housing.
- a capsule medical device is introduced into the body of a subject and acquires information about the subject such as a captured image from the body of the subject.
- the present invention has been made in view of the above, and an object of the present invention is to provide a capsule medical device structure that can be easily assembled and can reduce the assembly time as compared with the conventional method and a manufacturing method thereof.
- a capsule medical device includes a casing having a capsule shape and an imaging element provided at least on one side and connected via a flexible substrate.
- First and second substrates, a first substrate holding member that holds the first substrate, a second substrate holding member that holds the second substrate, and the first and second substrate holding members A battery disposed between the first and second substrate holding members and the battery between the first and second substrate holding members respectively holding the first and second substrates.
- the battery is housed in the casing with the battery sandwiched therebetween.
- the battery is sandwiched between the first and second substrate holding members in a region of the flexible substrate disposed on one end side of the first substrate holding member.
- a battery section that is elastically deformed to come into contact with the battery is provided.
- the casing has a bottomed first casing member having a cylindrical portion and a capsule shape, and is engaged with the first casing member to engage the first casing.
- a second housing member serving as a lid of the body member, wherein the second substrate holding member, the battery, and the first substrate holding member are from the bottom side inside the first housing member.
- the second casing member covers the first substrate holding member inserted into the cylindrical portion, and the battery section is elastically compressed, and the first casing is elastically compressed. It is characterized by being fitted into the body member.
- the capsule medical device further includes an imaging lens and a lens holding frame that holds the imaging lens
- the first substrate holding member is two members that are divided in a direction perpendicular to the longitudinal direction of the housing.
- the first substrate holding member is two members that are divided in a direction perpendicular to the longitudinal direction of the housing.
- the first It includes two members that determine the position of the first substrate in a direction perpendicular to the longitudinal direction of the casing by sandwiching the substrate between each other.
- each of the first and second substrate holding members is a position in a longitudinal direction and a direction perpendicular to the longitudinal direction with respect to the housing while being housed in the housing. It has the positioning part which decides.
- the battery is attached to an end of the second substrate holding member opposite to the bottom side of the first housing member, and the second substrate includes A transmission antenna that communicates with an external device is formed, and the second substrate has the second substrate holding member such that the formation surface of the transmission antenna faces the bottom of the first casing member.
- a tongue piece that protrudes toward the second substrate and is electrically connected to the second substrate on the connection surface side of the battery with the second substrate holding member, and is elastic
- a second battery section provided with a tongue piece having a force is attached, and the second substrate and the battery are electrically connected via the tongue piece while being spatially separated.
- the second substrate holding member is two members divided in a direction perpendicular to the longitudinal direction of the housing, and the second substrate is sandwiched between the two. It is composed of two members for determining the position in the longitudinal direction of the casing and the direction orthogonal to the longitudinal direction.
- the capsule medical device is a second battery different from the battery, and further includes a second battery housed between the first substrate holding member and the first battery, the second battery A third battery piece that does not cause elastic deformation is provided on the first battery side end face of the battery.
- a groove portion in which the flexible substrate is disposed is formed on the inner wall of the housing.
- the capsule medical device further includes a third substrate on which a switch for switching on and off the power according to an external magnetic force is mounted, and the casing includes a portion having an outer periphery having a cylindrical shape, and the cylindrical shape is A planar portion is formed on a part of the outer periphery of the portion having the portion, and the arrangement direction of the third substrate is determined according to the position of the planar portion.
- the inner wall of the housing is provided with a groove portion in which the flexible substrate is disposed, and a groove portion having a circumferential position different from the planar portion is formed.
- the second casing member includes a hemispherical portion formed of a transparent resin material and the cylindrical portion connected to the hemispherical portion.
- a parting line generated during molding is provided at a boundary portion between the cylindrical portion and the hemispherical portion.
- At least one of the first substrate and the second substrate connected to each other via a flexible substrate is provided with an imaging element, and the first substrate is used as the first substrate.
- the region is provided on one end side of the first substrate holding member of the flexible substrate.
- the second casing member is covered and fitted into the first casing member in a state where the battery piece is elastically compressed.
- the capsule-type medical device manufacturing method may be provided at the end of the second substrate holding member on the side facing the first substrate holding member when stored in the housing before the step (c).
- the method further includes the step of attaching the battery.
- the step (c) is a second battery different from the battery between the battery and the first substrate holding member, and is elastic on one end surface.
- the second battery, to which a battery piece that does not cause deformation is attached, is inserted with the battery piece that does not cause elastic deformation toward the first battery.
- the battery is sandwiched between the first substrate holding member holding the first substrate and the second substrate holding member holding the second substrate, and the first substrate is held in this state. Since the substrate holding member, the second holding member, and the battery are housed in the housing, the capsule medical device can be easily assembled, and the time required for the assembly can be shortened compared to the conventional case.
- FIG. 1 is a cross-sectional view showing a configuration of a capsule medical device according to an embodiment of the present invention.
- FIG. 2 is a plan view showing an appearance of a functional unit included in the capsule medical device shown in FIG.
- FIG. 3 is a functional block diagram illustrating a configuration of a functional unit included in the capsule medical device illustrated in FIG. 1.
- FIG. 4A is a plan view of the dome portion shown in FIG. 1 as viewed from the opening side.
- 4B is a cross-sectional view taken along the line AA in FIG. 4A.
- 5A is a plan view of the case portion shown in FIG. 1 as viewed from the opening side.
- 5B is a cross-sectional view taken along the line BB of FIG. 5A.
- FIG. 6A is a cross-sectional view taken along the line CC of FIG. 5A.
- 6B is a cross-sectional view of the case portion cut along the line DD shown in FIG. 6A.
- FIG. 7 is a perspective view showing the first block portion shown in FIG.
- FIG. 8 is a perspective view showing a first spacer divided body constituting the spacer shown in FIG.
- FIG. 9 is a perspective view showing a second spacer divided body constituting the spacer shown in FIG. 10 is a cross-sectional view taken along line EE in FIG.
- 12B is a perspective view of the lens frame shown in FIG.
- FIG. 13 is a flowchart showing a method of assembling the objective lens unit shown in FIG.
- FIG. 14 is a plan view showing the aligned third lens and lens frame.
- FIG. 15 is a plan view showing the negative contact spring shown in FIG. 16 is a cross-sectional view taken along the line FF in FIG.
- FIG. 17 is a flowchart showing a method of assembling the first block portion shown in FIG.
- FIG. 18 is a perspective view showing an appearance of the first battery unit set shown in FIG. 1.
- FIG. 19 is a perspective view showing the structure of the positive electrode contact member shown in FIG.
- FIG. 20 is a diagram for explaining a method of manufacturing the first battery unit set shown in FIG. FIG.
- FIG. 21 is a perspective view showing an appearance of the second battery unit set shown in FIG.
- FIG. 22 is a diagram for explaining the structure on the negative electrode surface side of a general disk-type battery.
- 23 is a perspective view showing the structure of the insulating sheet shown in FIG.
- FIG. 24 is a diagram for explaining a method of manufacturing the second battery unit set shown in FIG.
- FIG. 25 is a top view showing the appearance of the second block portion shown in FIG. 26 is a cross-sectional view taken along the line GG in FIG.
- FIG. 27 is a diagram showing the first spacer divided body and the second spacer divided body in a separated state.
- FIG. 28 is a view showing a state in which the first spacer divided body and the second spacer divided body are fitted.
- FIG. 29 is an enlarged perspective view showing a positive electrode contact member engaging portion.
- FIG. 30 is a cross-sectional view of the spacer cut along the line HH in FIG.
- FIG. 31 is an enlarged perspective view showing a positive electrode contact member position restricting portion.
- FIG. 32 is a diagram illustrating a method of attaching the first electrode unit set to the second block unit.
- FIG. 33 is a flowchart showing a method of assembling the capsule medical device shown in FIG.
- FIG. 34A is a diagram showing a step of inserting the second block part and the first battery part set into the case part.
- FIG. 34B is a diagram showing a step of inserting the second battery part set into the case part.
- FIG. 34C is a diagram showing a step of inserting the first block portion into the case portion.
- FIG. 34D is a diagram illustrating a step of covering the first block portion with the dome portion.
- FIG. 34E is a diagram showing a completed capsule medical device.
- FIG. 35 is a flowchart showing the operation of the capsule medical device shown in FIG.
- FIG. 36 is a top view showing the shape of the illumination board in the first modification.
- FIG. 37 is a top view showing the shape of the illumination board in the second modification.
- FIG. 38 is a cross-sectional view showing the outer shape of the illumination board and the lens frame in Modification 3.
- FIG. 39 is a perspective view showing the outer shape of the illumination board and the lens frame in Modification 4.
- FIG. 40 is a perspective view showing a spacer portion and a substrate portion on which a negative contact spring is mounted in Modification 5.
- FIG. 40 is a perspective view showing a spacer portion and a substrate portion on which a negative contact spring is mounted in Modification 5.
- FIG. 41 is a partial cross-sectional view illustrating a bent portion of a flexible substrate.
- FIG. 42 is a front view showing an example of manufacturing a flexible substrate in Modification 6.
- FIG. 43 is a cross-sectional view showing another example of manufacturing a flexible substrate in Modification 6.
- FIG. 44 is a cross-sectional view showing still another example of manufacturing the flexible substrate in Modification 6.
- FIG. 45 is a top view showing still another example of manufacturing the flexible substrate in the sixth modification.
- FIG. 1 is a cross-sectional view showing a configuration of a capsule medical device according to an embodiment of the present invention.
- the capsule medical device 1 includes a capsule-shaped casing 2 including a dome portion 10 having a hemispherical shape and a bottomed case portion 20 having a cylindrical portion, and various functional units assembled to a spacer 300.
- the functional unit assembled to the first block unit 3 and the functional unit assembled to the second block unit 5 are electrically connected by the flexible substrate 6.
- the second block unit 5, the battery unit 4, and the first block unit 3 are accommodated in the case unit 20 in this order, and are sealed in the housing 2 by the dome unit 10 that engages with the case unit 20 and serves as a lid. Is done.
- the first block unit 3 includes an illumination unit 30 that generates illumination light that illuminates the subject, and an objective lens that collects light incident from the outside via the dome unit 10 and forms an image on the light receiving unit of the image sensor 42.
- Various controls such as an on / off control of the power supply of the capsule medical device 1 and an imaging unit 40 that generates an electric signal representing an image by photoelectrically converting light received through the unit 200 and the objective lens unit 200
- the control part 50 which performs is provided.
- the objective lens unit 200 is designed such that the entrance pupil position coincides with the spherical center of the dome portion 10.
- the controller 50 is provided with a negative contact spring 480 that ensures electrical continuity with the battery unit 4.
- the battery unit 4 includes a first battery unit set 400 and a second battery unit set 450 in which a battery and a contact member are integrated.
- the second block unit 5 includes a wireless communication unit 60 that receives the electrical signal generated in the imaging unit 40 and transmits the electrical signal superimposed on the wireless signal.
- FIG. 2 is a plan view schematically showing the appearance of the illumination unit 30, the imaging unit 40, the control unit 50, and the wireless communication unit 60 connected via the flexible substrate 6.
- FIG. 2A shows a state in which the illumination unit 30 faces front
- FIG. 2B shows a state in which the illumination unit 30 faces back.
- FIG. 3 is a block diagram showing the configuration of these functional units.
- the illumination unit 30 includes a flexible illumination board 31 integrated with the flexible board 6 and a plurality of illumination elements 32 mounted on the illumination board 31.
- a circular opening 33 is formed at a substantially central portion of the illumination substrate 31, and the illumination element 32 is disposed around the opening 33.
- the illumination element 32 is, for example, an LED that generates white illumination light. In the present embodiment, four illumination elements 32 are arranged around the opening 33 at equal intervals. These illumination elements 32 are connected in series and connected to an illumination drive circuit described later.
- the position of the illumination unit 30 in the housing 2 is determined by inserting the objective lens unit 200 through the opening 33 of the illumination substrate 31.
- the imaging unit 40 includes a flexible imaging substrate 41 integrated with the flexible substrate 6, an imaging element 42 such as a CMOS flip-chip mounted on the imaging substrate 41, and a circuit unit 43 for causing the imaging element 42 to perform an imaging operation.
- An imaging element 42 such as a CMOS flip-chip mounted on the imaging substrate 41
- a circuit unit 43 for causing the imaging element 42 to perform an imaging operation.
- Have A rectangular opening 44 is formed in a substantially central portion of the imaging substrate 41.
- the image sensor 42 is disposed so that the light receiving surface 42 a faces the image pickup substrate 41, and the periphery of the light receiving surface 42 a contacts the periphery of the opening 44. As a result, the light receiving surface 42a is exposed from the opening 44, as shown in FIG.
- the image sensor 42 receives the light that has passed through the opening 44 and photoelectrically converts it to generate an electrical signal representing an image corresponding to the subject.
- the circuit unit 43 controls the imaging operation by the imaging device 42 and controls the operation of an illumination driving unit 53c (described later) in synchronization with the imaging operation, and the electrical signal generated by the imaging device 42 Based on a signal processing unit 43b that performs predetermined signal processing and converts it into an image signal, an internal register 43c that stores information (such as ID information) related to the capsule medical device 1, and vibrations generated by a crystal resonator 55 described later. And an oscillation circuit 43d for generating a clock signal.
- the imaging element 42 and the circuit unit 43 may be provided in the same IC chip, or may be provided in separate IC chips.
- the control unit 50 includes a control board 51 formed of a rigid board, and a reed switch 52, a power supply IC 53, a memory 54, and an electronic component group 50G such as a crystal vibrator 55 mounted on the control board 51.
- the control board 51 is electrically connected to the flexible board 6 by soldering. Further, in the end region of the control substrate 51 that is different from the portion where the flexible substrate 6 extends, the ear portion 51 a used for alignment with the spacer 300 protrudes outward from the flexible substrate 6. It is formed in such a shape.
- the reed switch 52 performs a switch operation in response to an external magnetic field.
- the power supply IC 53 supplies power to the illumination unit 30 and the imaging unit 40 under the control of the power supply control unit 53a that controls start / stop of the power supply according to the switch operation of the reed switch 52 and the power supply control unit 53a.
- a power supply unit 53b and an illumination drive unit 53c that drives the illumination unit 30 are included.
- the memory 54 is, for example, an EEPROM, and stores operation setting information and the like.
- a negative contact spring 480 is mounted using a solder 490 on a substrate portion 640 formed integrally with the flexible substrate 6 on the back side of the control substrate 51.
- the wireless communication unit 60 includes a wireless communication substrate (hereinafter referred to as a wireless substrate) 61 formed of a rigid substrate, and a wireless signal transmission antenna (hereinafter referred to as a transmission antenna) 62 formed on the wireless substrate 61. And an electronic component 63 for wireless communication mounted on the wireless substrate 61.
- the wireless board 61 is electrically connected to the flexible board 6 by solder 490. Ear portions 61 a used for alignment with the spacers 500 are formed in a region different from the portion where the flexible substrate 6 extends in the end region of the wireless substrate 61.
- the transmitting antenna 62 is realized by patterning the antenna on the wireless substrate 61 in order to suppress production variations.
- the electronic component 63 includes, for example, elements constituting a modulation unit 63a that modulates the image signal output from the imaging unit 40.
- a pad 64 that is electrically connected to the first battery unit set 400 is provided.
- FIG. 4A is a plan view of the dome 10 viewed from the opening side.
- 4B is a cross-sectional view taken along the line AA in FIG. 4A.
- the dome portion 10 is cut so as to have a hemispherical dome hemisphere portion 10a, a cylindrical dome gripping portion 10b having the same outer diameter as that of the dome hemisphere portion 10a, and an outer diameter smaller than that of the dome gripping portion 10b.
- a notch is provided and includes a case portion 20 and a dome cylindrical portion 10c to be fitted. You may arrange
- the dome hemisphere portion 10 a is a portion that is one end portion in the longitudinal direction of the capsule medical device 1.
- region included in the optical visual field range of the imaging part 40 of the dome hemisphere part 10a is mirror-finished.
- the dome gripping portion 10b is provided so that the dome hemispherical portion 10a can be gripped without touching the mirror-finished portion during assembly or the like.
- the outer diameter of the dome cylindrical portion 10c is substantially equal to the inner diameter of a case fitting portion 20c described later.
- the end face 10d of the dome gripping part 10b is abutted against the end face (case end part 20g) of the case part 20 when the dome cylindrical part 10c is fitted to the case part 20.
- a rotation restricting portion 10e protruding outward is formed on the outer peripheral surface of the dome cylindrical portion 10c in order to restrict the rotation of the dome cylindrical portion 10c with respect to the case portion 20. Further, on the inner peripheral side of the dome portion 10, an inner wall rib 10 f is formed for positioning when the first block portion 3 or the like is assembled inside the housing 2.
- Such a dome portion 10 is transparent to illumination light such as visible light irradiated by the illumination portion 30 and is biocompatible (for example, a resin material such as polycarbonate, acrylic, cycloolefin polymer). And formed by injection molding.
- FIG. 5A is a plan view of the case portion 20 as viewed from the opening side.
- FIG. 5B is a cross-sectional view taken along the line BB in FIG. 5A.
- Case portion 20 includes a hemispherical case hemispherical portion 20a and a cylindrical case cylindrical portion 20b having the same outer diameter as the outer diameter of case hemispherical portion 20a.
- the case hemispherical portion 20 a is a portion that is the other end portion in the longitudinal direction of the capsule medical device 1.
- a case fitting portion 20c to which the dome cylindrical portion 10c is fitted is provided at the opening end of the case cylindrical portion 20b.
- the inner diameter of the case fitting part 20c is larger than the inner diameter of the other part of the case cylindrical part 20b.
- a case groove portion 20 d is formed on the inner wall of the case portion 20.
- the case groove portion 20d secures a space for disposing the flexible substrate 6 when the first block portion 3 and the like are accommodated in the housing 2, and the dome cylindrical portion 10c when the dome portion 10 is fitted. Is provided to engage the rotation restricting portion 10e provided in the.
- the cross section perpendicular to the longitudinal direction of the case groove 20d has a substantially trapezoidal shape with a narrow width on the bottom side (outer peripheral side when viewed from the opening side) of the groove. The reason for this shape is to suppress a sudden change in thickness when the case portion 20 is injection-molded so as not to impair the moldability.
- Case inner wall ribs 20e projecting to the inner peripheral side are formed at a plurality of locations inside the case hemispherical portion 20a in order to perform positioning when the second block portion 5 and the like are stored inside the housing 2.
- the case inner wall ribs 20e are provided at four locations, but the number and size of the case inner wall ribs 20e are not limited thereto.
- only one ring-shaped case inner wall rib that is continuous over the entire inner periphery of the case portion 20 may be formed.
- FIG. 6A is a cross-sectional view taken along the line CC of FIG. 5A
- FIG. 6B is a cross-sectional view when the case portion 20 is cut along the line DD shown in FIG. 6A
- a flat portion (so-called D-cut) 20f obtained by cutting a part of the outer periphery into a flat shape in order to determine the orientation of the housing 2 is provided. Is formed.
- the planar portion 20f is provided in a partial region in the longitudinal direction of the case cylindrical portion 20b (for example, the end portion on the case hemispherical portion 20a side).
- the position of the flat surface portion 20f in the circumferential direction is not particularly limited, but it is preferable that the position of the flat surface portion 20f is shifted from the position of the case groove portion 20d in order to ensure a certain thickness of the case cylindrical portion 20b.
- the flat surface portion 20f is provided at a position shifted by 90 degrees in the circumferential direction with respect to the case groove portion 20d.
- Such a case portion 20 may be an opaque color, and is formed by injection molding using a biocompatible material (for example, a resin material such as polysulfone or polycarbonate).
- a biocompatible material for example, a resin material such as polysulfone or polycarbonate.
- Such a housing 2 is sealed in a watertight manner by an adhesive 7 disposed between the outer peripheral side of the dome cylindrical portion 10c and the inner peripheral side of the case fitting portion 20c (see FIG. 1).
- FIG. 7 is a perspective view showing an appearance of the first block unit 3.
- the upper side of the figure is the direction of the dome portion 10.
- the spacer 300 has a cylindrical outer shape as a whole, and a pair of divided bodies (a first spacer divided body 310 and a second spacer divided into two by a plane passing through the central axis of the cylindrical shape). Spacer divided body 320).
- the first spacer divided body 310 and the second spacer divided body 320 hold the objective lens unit 200, the illumination unit 30, the imaging unit 40, and the control unit 50 while being sandwiched between them.
- the dome fitting portion 300a is a portion that is sandwiched between the dome portion 10 and fits with the inner wall of the dome cylindrical portion 10c.
- the outer diameter of the dome fitting portion 300a is substantially equal to the inner diameter of the dome cylindrical portion 10c, and is determined so that the upper end portion 300b of the spacer 300 is inserted so as to be able to contact the inner wall rib 10f of the dome portion 10.
- the upper end portion 300 b of the spacer 300 is a receiving surface of the illumination substrate 31.
- the illumination substrate 31 is disposed by inserting the portion of the objective lens unit 200 protruding from the upper end portion 300b into the opening 33.
- FIG. 8 is a perspective view showing the first spacer divided body 310.
- lens frame engaging portions 310a for supporting the objective lens unit 200 from the side are formed at two locations on the arc.
- the cross section of these lens frame engaging portions 310a has a U-shape.
- a lens frame rotation restricting portion 310b for restricting a positional shift in the rotation direction of the objective lens unit 200 is provided.
- the first spacer divided body 310 is formed with a board engaging portion 310c that sandwiches the control board 51 from the side.
- the board engaging part 310c is provided with a board rotation restricting part 310d that engages with the ear part 51a of the control board 51 to restrict the positional deviation of the control board 51 in the rotation direction.
- a flexible substrate receiving portion (hereinafter abbreviated as “flexible receiving portion”) 300 c is formed on the outer peripheral portion of the first spacer divided body 310.
- the flexible receiving portion 300c is temporarily placed outside the spacer 300 without sandwiching the flexible substrate 6 extending from the imaging substrate 41 toward the control substrate 51 between the first spacer divided body 310 and the second spacer divided body 320. It is a part for escaping and arranging.
- An R chamfer is formed on the ridge line in contact with the flexible substrate 6 of the flexible receiving portion 300c.
- what is necessary is just to provide such a flexible receptacle part 300c in any one of the 1st spacer division body 310 or the 2nd spacer division body 320.
- the 1st spacer division body 310 has the boss
- FIG. 1st spacer division body 310 has the boss
- FIG. 9 is a perspective view showing the second spacer divided body 320.
- lens frame engaging portions 320a for supporting the objective lens unit 200 from the side are formed at two locations on the arc.
- the cross section of these lens frame engaging portions 320a has a U shape.
- a lens frame rotation restricting portion 320b for restricting a positional shift in the rotation direction of the objective lens unit 200 is provided.
- the second spacer divided body 320 is formed with a board engaging portion 320c that sandwiches the control board 51 from the side.
- the board engaging part 320 c is provided with a board rotation restricting part 320 d that engages with the ear part 51 a of the control board 51 and restricts the positional deviation of the control board 51 in the rotation direction.
- the second spacer divided body 320 has a fitting hole 320f formed at a position facing the boss 310e of the first spacer divided body 310, and a boss 320e formed at a position facing the fitting hole 310f. is doing.
- Such first and second spacer divided bodies 310 and 320 are formed by injection molding using a resin material such as polycarbonate, ABS resin, polyacetal (POM), modified polyphenylene ether (PPE) (modified PPO), and the like.
- a resin material such as polycarbonate, ABS resin, polyacetal (POM), modified polyphenylene ether (PPE) (modified PPO), and the like.
- POM polyacetal
- PPE modified polyphenylene ether
- modified PPO modified PPO
- the modified PPO is advantageous in that cracks are less likely to occur in the assembled state because it is lighter and has higher mechanical strength than other resins.
- FIG. 10 is a view showing a part of the EE cross section of FIG.
- the objective lens unit 200 includes first to third lenses 201 to 203, a diaphragm 204, and a lens frame 205 that positions and holds these optical components.
- the objective lens unit 200 is positioned with respect to the light receiving surface 42 a of the image sensor 42 by an image sensor abutting portion 203 f provided on the third lens 203.
- the objective lens unit 200 and the imaging substrate 41 are fixed to each other with an adhesive 207.
- the adhesive 207 seals the optical system in the objective lens unit 200.
- the lens frame 205 of the objective lens unit 200 is provided with a spacer fitting portion 205g for holding the objective lens unit 200 between the lens frame engaging portions 310a and 320a of the spacer 300.
- the first to third lenses 201 to 203 are transparent lenses formed by injection molding using, for example, a resin such as cycloolefin polymer (COP), polycarbonate, acrylic, and the like so that their optical axes coincide with each other. Be placed.
- a resin such as cycloolefin polymer (COP), polycarbonate, acrylic, and the like so that their optical axes coincide with each other. Be placed.
- the first lens 201 is a concave lens having a first lens surface 201a and a second lens surface 201b facing each other, and is arranged with the first lens surface 201a facing the incident direction of light.
- a lens frame abutting portion 201c is provided on the first lens surface 201a side peripheral portion (outside of the lens surface) of the first lens 201 so as to be orthogonal to the optical axis.
- a part of the outer peripheral side surface of the first lens 201 is a lens frame fitting portion 201d that is formed in a cylindrical shape coaxial with the optical axis.
- a diaphragm receiving portion 201e that comes into contact with the diaphragm 204 is provided at the peripheral edge of the end surface on the second lens surface 201b side of the first lens 201 so as to be orthogonal to the optical axis.
- the second lens 202 is a concave lens having a first lens surface 202a and a second lens surface 202b facing each other, and is arranged with the first lens surface 202a facing the first lens 201 side.
- a diaphragm receiving surface 202c that comes into contact with the diaphragm 204 is provided at the peripheral edge of the end surface on the first lens surface 202a side of the second lens 202 so as to be orthogonal to the optical axis and protrude from the first lens surface 202a.
- a part of the outer peripheral side surface of the second lens 202 is a lens frame fitting portion 202d formed in a cylindrical shape coaxial with the optical axis.
- the diameter of the lens frame fitting portion 202d is larger than the diameter of the lens frame fitting portion 201d.
- a lens receiving portion 202e that comes into contact with the third lens 203 is provided at the peripheral edge of the second lens 202 on the second lens surface 202b side so as to be orthogonal to the optical axis.
- the third lens 203 is a convex lens having a first lens surface 203a and a second lens surface 203b facing each other, and is arranged with the first lens surface 203a facing the second lens 202 side.
- a lens abutting portion 203c that comes into contact with the second lens 202 is disposed at a peripheral edge of the end surface on the first lens surface 203a side of the third lens 203 so as to be orthogonal to the optical axis and protrude from the first lens surface 203a.
- a part of the outer peripheral side surface of the third lens is a lens frame fitting portion 203d formed in a cylindrical shape coaxial with the optical axis. The diameter of the lens frame fitting portion 203d is larger than the diameter of the lens frame fitting portion 202d.
- FIG. 11 is a perspective view of the third lens 203 viewed from the second lens surface 203b side.
- a plurality of image sensor abutting portions 203f are provided on the peripheral edge of the bottom surface 203e on the second lens surface 203b side.
- the number and arrangement of the imaging element abutting portions 203f may be determined according to the size and shape of the opening 44 of the imaging substrate 41 and the light receiving surface 42a of the imaging element 42.
- Image sensor abutting portions 203f are provided at four locations corresponding to the inner ends of the two apexes. These image sensor abutting portions 203f have a cylindrical shape, and are formed such that four abutting surfaces 203g that abut on the image sensor 42 are included in the same plane orthogonal to the optical axis.
- an alignment mark portion 203i for determining the orientation of the image sensor butting portion 203f is formed in the side surface region 203h on the bottom surface 203e side of the third lens 203 (region that does not cover the lens frame fitting portion 203d).
- the alignment mark 203i can be substituted with the remaining gate cut when the third lens 203 is injection molded.
- the diaphragm 204 is disposed to determine the brightness and depth of focus of the optical system.
- a black metal diaphragm obtained by forming a metal such as phosphor bronze into a thin plate and processed by punching or etching, or a black resin diaphragm obtained by punching a resin sheet such as polyester is used.
- the diaphragm 204 has an outer diameter substantially equal to the lens frame fitting portion 202d of the second lens 202, and has a donut shape in which a circular opening 204a coaxial with the outer periphery is formed at the center.
- FIG. 12A is a perspective view of the lens frame 205 viewed from the image sensor side
- FIG. 12B is a perspective view of the lens frame 205 viewed from the light incident side.
- the lens frame 205 is provided to align the optical axes of the first to third lenses 201 to 203 and the diaphragm 204 and to define and hold the interval between the lens surfaces.
- the lens frame 205 is produced by, for example, injection molding using a resin such as polycarbonate (PC) or cutting using a metal such as SUS or brass.
- the color of the lens frame 205 is preferably black for light shielding.
- the lens frame 205 is a frame having a cylindrical structure with both ends opened.
- the lens frame 205 has an insertion opening 206a into which the first to third lenses 201 to 203 and the diaphragm 204 are inserted at the time of assembly, and incident light that makes illumination light incident at the time of imaging.
- An opening for light 206b is provided.
- a lens frame fitting portion 201a having a diameter substantially the same as that of the lens frame fitting portion 201d of the first lens 201 is formed.
- a lens receiving portion 205b that contacts the lens frame abutting portion 201c is formed on the outer peripheral side of the lens fitting portion 205a so as to be orthogonal to the optical axis.
- the inner wall side surface above the lens receiving portion 205b is substantially the same diameter as the lens frame fitting portion 202d of the second lens 202 and is a coaxial lens fitting portion 205c. Further, the inner wall side surface above the lens fitting portion 205c is a lens fitting portion 205d that is substantially the same diameter and coaxial with the lens frame fitting portion 203d of the third lens 203. Further, a gap forming portion 205e having a diameter larger than that of the lens fitting portion 205d is provided above the lens fitting portion 205d. The gap forming portion 205e forms a gap that can accommodate the alignment mark portion 203i (FIG. 11) between the side surface 203h of the third lens 203 and the lens frame 205 when the third lens 203 is fitted. Has been.
- An alignment mark portion 205f is formed outside the opening on the end face on the insertion opening 206a side of the lens frame 205. Also, a spacer fitting portion 205g for holding the lens frame 205 on the spacer 300 is formed near the end on the insertion opening 206a side.
- an inclined portion 205h that is inclined outward toward the spacer fitting portion 205g.
- the lens frame 205 includes a tapered illumination board introduction part 205i that spreads from the incident light opening 206b side toward the insertion opening 206a, and a cylindrical part having the same diameter as the lower end of the illumination board introduction part 205i. 205j.
- the illumination board introduction part 205i is a part that is inserted into the opening 31a formed in the illumination board 31, and is made easy to insert by making the outer shape slightly tapered.
- the diameter of the lower end of the illumination board introducing portion 205i is substantially the same as that of the opening 31a for positioning the illumination board 31 with respect to the lens frame 205.
- the cylindrical portion 205 j is a portion that fits with the spacer 300.
- a spacer rotation restricting portion 205k that engages with the lens frame rotation restricting portions 310b and 320b of the spacer 300 and restricts the positional deviation of the lens frame 205 with respect to the spacer 300 is provided on the side surface of the cylindrical portion 205j on the spacer fitting portion 205g. Is provided.
- step S21 the lens frame 205 is installed in a stable place so that the insertion opening 206a faces upward (the direction of FIG. 12A).
- the first lens 201 is inserted from the insertion opening 206a with the first lens surface 201a facing downward, the lens frame fitting portion 201d is fitted to the lens fitting portion 205a, and the lens The frame abutting portion 201c is brought into contact with the lens receiving portion 205b. Thereby, the alignment in the radial direction and the axial direction of the first lens 201 is completed.
- step S23 the diaphragm 204 is inserted from the insertion opening 206a, the outer periphery is fitted to the lens fitting part 205a, and one end surface is brought into contact with the diaphragm receiving part 201e of the first lens 201. Thereby, the alignment of the diaphragm 204 in the circumferential direction and the axial direction is completed.
- step S24 the second lens 202 is inserted from the insertion opening 206a with the first lens surface 202a facing downward, the lens frame fitting portion 202d is fitted to the lens fitting portion 205a, and the aperture is stopped.
- the receiving surface 202 c is brought into contact with the diaphragm 204. Thereby, the alignment in the circumferential direction and the axial direction of the second lens 202 is completed.
- the third lens 203 is rotated and adjusted visually or under a microscope so that the alignment mark portion 203i and the alignment mark portion 205f of the lens frame 205 face each other. By this adjustment, the positions of the four image sensor-attached contact portions 203f with respect to the lens frame 205 are determined.
- step S26 the third lens 203 is inserted from the insertion opening 206a with the first lens surface 203a facing downward. Then, the lens frame fitting portion 203d is fitted to the lens fitting portion 205d, and the lens abutting portion 203c is brought into contact with the lens receiving portion 202e of the second lens 202. Thereby, the alignment of the third lens 203 in the circumferential direction and the axial direction is completed.
- Step S27 the inside of the lens frame 205 is sealed by curing the adhesive applied to the lens frame fitting portion 203d of the third lens 203. Thereby, the objective lens unit 200 is completed.
- FIG. 15 is a plan view showing the negative contact spring 480.
- the negative contact spring 480 is elastically compressed when housed in the housing 2, electrically connects the control board 51 and the second battery unit 450, and absorbs tolerances inside the housing 2. Thus, the built-in object in the housing 2 is urged in both directions with the negative contact spring 480 as a boundary.
- the negative contact spring 480 includes three spring parts 481, three projecting parts 482, a central flat part 483, and an outer peripheral part that maintain conduction while energizing the second battery part set 450 (see FIG. 1) that faces each other. And a notch 484 provided in the.
- the spring portion 481 is disposed around the central plane portion 483 at a position that is rotationally symmetric by 120 ° with respect to the center of the central plane portion 483. In this manner, by supporting the battery 453 at three points that are rotationally symmetric with respect to the center of the central plane portion 483, the battery 453 can be stably disposed on the negative contact spring 480.
- the spring load (pressing load) of the spring part 481 is set so that the contact resistance with respect to the battery 453 is 500 m ⁇ or less. Further, the height (displacement) of the spring portion 481 is set so as to absorb variations in the axial direction of the built-in objects in the housing 2. The pressing load is set so that a force within the range of the contact resistance can be generated within the range of variation in the axial direction.
- FIG. 16 is a cross-sectional view taken along the line FF in FIG.
- the spring part 481 is bent at three positions P1, P2, and P3. Thereby, the total displacement amount of the spring part 481 can be earned. In addition, this makes it possible to disperse the position where the stress is concentrated when the spring portion 481 is bent, so that it is possible to suppress deterioration of the spring characteristics due to plastic deformation.
- the protruding portion 482 is arranged with a position shifted from the spring portion 481 so as to be rotationally symmetrical with each other by 120 ° with respect to the center of the central plane portion 483.
- the protruding portion 482 is provided so as to protrude in the same direction as the bending direction of the spring portion 481 (in FIG. 15, the front side of the paper). As a result, the spring portion 481 is prevented from being bent deeper than a predetermined height, so that deterioration of the spring characteristics due to plastic deformation can be more reliably prevented.
- the central plane portion 483 is used as a spring suction surface when the negative contact spring 480 is automatically mounted.
- the size of the central flat portion 483 is preferably, for example, about 4.5 mm or more in diameter. This size is determined by the shape of the adsorbing portion that can adsorb the negative contact spring 480.
- the notches 484 are provided on the outer periphery of the negative contact spring 480 at a predetermined interval.
- the shape of the notch 484 is, for example, R0.25 mm. This shape is determined according to the land shape of soldering when the negative electrode contact spring 480 is mounted.
- Such a negative electrode contact spring 480 is formed by press forming using a thin metal plate having spring characteristics such as SUS (for example, SUS304CSP) or phosphor bronze (for example, C5210P).
- a thin metal plate having spring characteristics such as SUS (for example, SUS304CSP) or phosphor bronze (for example, C5210P).
- SUS for example, SUS304CSP
- phosphor bronze for example, C5210P
- Ni-P having a thickness of about 5 ⁇ m. It is manufactured by performing a base treatment by plating and a surface treatment by Au—Co plating having a thickness of about 0.5 ⁇ m.
- the negative contact spring 480 is fixed and electrically connected to the flexible substrate 6 on the back side of the control substrate 51 by soldering, for example, at four positions at notches 484 provided in the outer peripheral portion at 90 ° intervals. .
- step S31 the imaging substrate 41 is attached to the objective lens unit 200. Specifically, first, referring to the alignment mark portion 205f (FIG. 14) of the lens frame 205, the image pickup device abutting portion 203f is placed on the light receiving surface 42a of the image pickup device 42 through the opening 44 of the image pickup substrate 41. Strike. Thereafter, the imaging substrate 41 and the objective lens unit 200 are temporarily fixed using an adhesive such as a UV curing type.
- step S32 an adhesive 207 such as a UV curing type is disposed between the inclined portion 205h of the lens frame 205 and the imaging substrate 41 and cured. Thereby, the space including the light receiving surface 42a of the image sensor 42 is sealed, and the deterioration of the optical characteristics due to the intrusion of dust or moisture is suppressed.
- an adhesive 207 such as a UV curing type is disposed between the inclined portion 205h of the lens frame 205 and the imaging substrate 41 and cured.
- step S33 the objective lens unit 200 is attached to the first spacer divided body 310. Specifically, in a state where the spacer rotation restricting portion 205k of the lens frame 205 is engaged with the lens frame rotation restricting portion 310b of the first spacer divided body 310, the spacer fitting portion 205g is located on the lens frame engaging portion 310a side. Engage from one side. At this time, the flexible substrate 6 extending from the imaging substrate 41 toward the control substrate 51 is directed toward the flexible receiving portion 300c.
- step S34 the control substrate 51 is attached to the first spacer divided body 310. Specifically, the ear 51a of the control board 51 is engaged with the board rotation restricting part 310d, and the control board 51 is inserted into the board engaging part 310c from the side.
- step S35 the second spacer divided body 320 is attached to the first spacer divided body 310. That is, the second spacer divided body 320 is engaged with the first spacer divided body 310 so as to sandwich the imaging substrate 41 and the control substrate 51 from the side. Then, the boss 310e of the first spacer divided body 310 and the fitting hole 320f of the second spacer divided body 320 are fitted, and the boss 320e of the second spacer divided body 320 and the fitting hole of the first spacer divided body 310 are fitted. 310f is fitted.
- the lens frame engaging portion 310a, the lens frame engaging portion 320a, and the spacer fitting portion 205g may be fixed with an interference fit.
- step S36 the illumination board introducing portion 205i of the lens frame 205 is inserted into the opening 31a of the illumination board 31 and temporarily fixed.
- the illumination substrate 31 connected to the flexible substrate 6 extending from the imaging substrate 41 is fixed in position with respect to the spacer 300 when the dome portion 10 is attached. Therefore, at this stage, the position of the illumination board 31 is not completely determined by the restoring force of the flexible board 6. Therefore, in the present embodiment, the length of the flexible substrate 6 between the imaging substrate 41 and the illumination substrate 31, the diameter of the illumination substrate introduction portion 205i, and the diameter of the opening 31a are appropriately adjusted to obtain the illumination substrate.
- the illumination substrate 31 is prevented from coming off from the introduction part 205i.
- the restoring force of the flexible substrate 6 acts obliquely upward with respect to the illumination substrate 31 so that the length of the flexible substrate 6 between the imaging substrate 41 and the illumination substrate 31 does not become too long.
- the inner periphery of the opening 31a is caught by the illumination board introduction part 205i, so that the illumination board 31 can be prevented from coming off from the illumination board introduction part 205i.
- FIG. 18 is a perspective view showing the external appearance of the first battery unit set 400.
- the first battery assembly 400 includes a battery 402 having a disk shape (button type), a positive contact member 401 for contacting the positive surface of the battery 402 to obtain conduction, and the battery 402 and the positive contact member 401. And fastening member 403 to be made.
- FIG. 19 is a perspective view showing the structure of the positive electrode contact member 401.
- the positive electrode contact member 401 is a metal member having a spring characteristic with a thickness of about 0.1 mm, for example.
- Spacer engaging portions 401 a used when holding the spacer 500 are provided at two opposing positions on the outer peripheral portion of the positive electrode contact member 401 so as to face each other.
- a substrate contact portion 401b for pressing the wireless substrate 61 and electrically connecting the battery 402 and the wireless substrate 61 is provided.
- the board contact portion 401b has a tongue that protrudes and extends toward the wireless board 61 when assembled to the housing, and has a spring characteristic that presses the wireless board 61 when assembled.
- the outer periphery of the positive electrode contact member 401 is provided with three L-shaped bent portions 401 c that are bent so as to rise 90 ° with respect to the bottom surface of the positive electrode contact member 401.
- One of these L-shaped bent portions 401c is provided at a position facing the substrate contact portion 401b.
- the other two L-shaped bent portions 401c are provided at positions that are symmetrical with respect to each other with the substrate contact portion 401b interposed therebetween.
- the convex part 401d which protrudes toward the contact surface with the battery 402 is formed in the several places (three places in FIG. 19) of the bottom face of the positive electrode contact member 401. As shown in FIG. The convex portion 401 d ensures conduction between the positive electrode contact member 401 and the battery 402.
- Such a positive electrode contact member 401 is formed by press forming using a thin metal plate having spring characteristics such as SUS (for example, SUS304CSP) or phosphor bronze (for example, C5210P), and further, for example, Ni having a thickness of about 3 ⁇ m. It is produced by applying a base treatment by -P plating and a surface treatment by Au-Co plating with a thickness of about 0.5 ⁇ m.
- a thin metal plate having spring characteristics such as SUS (for example, SUS304CSP) or phosphor bronze (for example, C5210P)
- Ni having a thickness of about 3 ⁇ m. It is produced by applying a base treatment by -P plating and a surface treatment by Au-Co plating with a thickness of about 0.5 ⁇ m.
- the fastening member 403 is made of a heat shrinkable tube such as PET or PVC that shrinks when heated. Specifically, in order to suppress the thermal influence on the battery 402, it is preferable to use a material that contracts by heating at a low temperature of about 80 ° C. for a short time. In order to suppress an increase in the diameter of the first battery assembly 400, it is preferable to use a material having a thickness after shrinkage of about 0.05 mm to 0.1 mm.
- the positive electrode contact member 401 is arranged on the positive electrode surface side of the battery 402 so that the convex portion 401 d protrudes toward the battery 402 side.
- the fastening member 403 is covered so as to cover the peripheral edge of the positive electrode contact member 401 and part of the side surface of the battery 402.
- the fastening member 403 may be cut in advance.
- the fastening members 403 are preferably arranged so that the fastening members 403 are continuous from the peripheral edge of the positive electrode contact member 401 to the side surface of the battery 402.
- the battery 402 and the positive electrode contact member 401 are integrated by heating and contracting the fastening member 403.
- the first battery unit set 400 shown in FIG. 18 is completed.
- FIG. 21 is a perspective view showing the external appearance of the second battery assembly 450.
- the second battery part set 450 includes a battery 453 having a disk shape (button type), an insulating sheet 451 for preventing a short circuit in the battery 402 of the first battery part set 400, and the battery 453 and the first battery part. It comprises a contact plate 452 that contacts the set 400, and a battery 453, an insulating sheet 451, and a fastening member 454 that integrates the contact plate 452.
- the negative electrode surface side of the disk-shaped battery 460 includes a battery positive electrode can 461 extending from the opposite positive electrode surface, and an inner negative electrode 462, which is a separator 463.
- the negative electrode side (the negative electrode surface of the battery 402) of the first battery unit set 400 and the positive electrode side (the positive electrode surface of the battery 453) of the second battery unit set 450 are arranged to face each other. If the opposing surfaces are left exposed, the battery positive electrode can and the negative electrode of the battery 402 may be conducted through the positive electrode surface of the battery 453 and short-circuited. Therefore, in the present embodiment, the occurrence of a short circuit is prevented by disposing the insulating sheet 451 on the positive electrode surface side of the battery 453.
- FIG. 23 is a perspective view showing the insulating sheet 451.
- the insulating sheet 451 includes a circular portion 451a having an outer diameter comparable to the outer diameter of the battery 453, and a predetermined number (for example, four) of extended portions 451b extending from the circular portion 451a to the outer peripheral side.
- An opening 451c that exposes the convex portion 452a of the contact plate 452 is formed at a substantially central portion of the insulating sheet 451.
- the insulating sheet 451 covers the positive electrode surface of the battery 453 in a region other than the opening 451c. ing.
- the extending portion 451b is provided on the outer periphery of the circular portion 451a at a predetermined interval (for example, 90 °). These extending portions 451 b are sandwiched between the side surface of the battery 453 and the fastening member 454 and hold the contact plate 452 so as to wrap around the battery 453.
- each extending portion 451b has a spatula shape with a widened tip.
- the spatula-shaped portion may be provided with an inclined portion 451d inclined by about 45 °.
- Such an insulating sheet 451 is produced, for example, by press punching a polyimide film (for example, Kapton (registered trademark) film manufactured by Toray DuPont Co., Ltd.).
- a polyimide film for example, Kapton (registered trademark) film manufactured by Toray DuPont Co., Ltd.
- a convex portion 452a is formed at a substantially central portion of the contact plate 452.
- the contact plate 452 contacts the negative electrode surface of the battery 402 of the first battery unit set 400 at the convex portion 452a to obtain conduction, and the positive electrode of the battery 453 on the surface opposite to the surface where the convex portion 452a is formed. Contact with the surface to obtain conduction.
- the height of the convex portion 452a is determined such that the apex is higher than the thickness of the insulating sheet 451.
- the diameter of the convex portion 452a is preferably as small as possible at the rising portion from the contact plate 452 in order to increase the rigidity of the convex portion 452a.
- Such a contact plate 452 is formed by, for example, a press forming process using phosphor bronze (C5191) that is easy to form a thin wall, and further, for example, a base treatment by Ni—P plating having a thickness of about 0.5 ⁇ m, and It is manufactured by performing a surface treatment by Au—Co plating with a thickness of about 0.5 ⁇ m.
- the fastening member 454 is made of a heat-shrinkable tube such as PET or PVC, like the fastening member 403.
- the fastening member 454 is disposed so as to be slightly lower than the upper surface of the insulating sheet 451 on the positive electrode surface 453a side in a state after being contracted, so that the end of the fastening member 454 does not extend to the positive electrode surface 453a. It is better to Accordingly, it is not necessary to provide a clearance for the fastening member 454 between the assembled battery 453 and the battery 402, and space saving can be achieved.
- the fastening member 454 may be wound so as to cover at least the portion of the battery positive electrode can extending toward the negative electrode surface 453b. Accordingly, it is possible to prevent other metal parts from coming into contact with the negative electrode surface 453b side during assembly and the like to cause a short circuit.
- the contact plate 452 and the insulating sheet 451 are sequentially arranged on the positive electrode surface 453 a side of the battery 453. Then, the fastening member 454 is placed so as to cover the side surface of the battery 453. At this time, it is preferable to cover the fastening member 454 so that the extending portion 451b of the insulating sheet 451 is pressed against the side surface of the battery 453.
- the battery 453, the contact plate 452, and the insulating sheet 451 are integrated by heating and contracting the fastening member 454. Thereby, the second battery unit set 450 shown in FIG. 21 is completed.
- FIG. 25 is a top view of the external appearance of the second block unit 5 as viewed from the transmitting antenna 62 forming surface side of the wireless communication unit 60.
- FIG. 26 is a cross-sectional view taken along the line GG in FIG. 26, the first battery unit set 400 attached to the second block unit 5 is also shown.
- the spacer 500 has a cylindrical outer shape as a whole, and a pair of divided bodies (a first spacer divided body 510 and a second spacer divided into two by a plane passing through the central axis of the cylindrical shape). Spacer divided body 520). The first spacer divided body 510 and the second spacer divided body 520 sandwich and hold the wireless communication unit 60 between each other.
- FIG. 27 is a view showing the first spacer divided body 510 and the second spacer divided body 520 separated from each other.
- wireless board engaging portions 510a for supporting the wireless board 61 from the side are formed at two locations on the arc.
- the cross section of the wireless board engaging portion 510 a has a U shape so as to sandwich the wireless board 61.
- a wireless board rotation restricting portion 510b that engages with the ear portion 61a of the wireless board 61 and restricts the positional displacement of the wireless board 61 in the rotation direction. .
- first spacer divided body 510 has a boss 510c and a fitting hole 510d as a fitting portion to be integrated with the second spacer divided body 520.
- wireless board engaging portions 520a for supporting the wireless board 61 from the side are formed at two locations on the arc.
- the cross section of the wireless board engaging portion 520a has a U-shape so as to sandwich the wireless board 61.
- a wireless board rotation restricting portion 520b that engages with the ear portion 61a of the wireless board 61 and restricts the positional deviation of the wireless board 61 in the rotation direction.
- the second spacer divided body 520 has a fitting hole 520d formed at a position facing the boss 510c of the first spacer divided body 510, and a boss 520c formed at a position facing the fitting hole 510d. is doing.
- a substrate contact opening 500a is provided near the center of the spacer 500.
- the substrate contact opening 500a is a space in which the substrate contact portion 401b of the positive electrode contact member 401 that electrically connects the first battery unit set 400 and the wireless substrate 61 is disposed.
- the substrate contact portion 401 b rising from the positive contact member 401 is in contact with the pad 64 formed on the flexible substrate 6 on the back side of the wireless substrate 61.
- substrate 61 and the battery part 4 can be arrange
- the length of the substrate contact opening 500a in the axial direction is the intensity of the wireless signal transmitted from the wireless communication unit 60, It is preferable to design based on the size of the battery unit 4 and the like. The reason is that, when a metal member is arranged in the vicinity of the radio signal radiation source, the radio signal radiation characteristic is usually deteriorated, but the length of the substrate contact opening 500a is appropriately set as in this embodiment. This is because the wireless board 61 and the battery unit 4 can be electrically connected while being separated by a distance necessary for obtaining predetermined wireless characteristics.
- FIG. 29 is an enlarged perspective view showing the positive electrode contact member engaging portion 500b.
- the shape of the positive electrode contact member engaging portion 500b is such that the surface b1 is an inclined surface that forms part of a conical surface so that the spacer engaging portion 401a can be easily fitted into the positive electrode contact member engaging portion 500b.
- the surface b2 may be a curved surface forming a part of the side surface of the cylinder, and the surface b3 may be an inclined plane.
- FIG. 30 is a cross-sectional view of the spacer 500 cut along the line HH in FIG. As shown in FIG. 30, the spacer 500 is provided with positive electrode contact member position restricting portions 500c formed by cutting out part of the circumference at three locations.
- FIG. 31 is an enlarged perspective view showing the vicinity of the positive electrode contact member position restricting portion 500c, and shows a state before the positive electrode contact member 401 is fitted.
- the positive electrode contact member position restricting portion 500 c is a portion that engages with an L-shaped bent portion 401 c formed on the positive electrode contact member 401. As a result, the rotation of the positive electrode contact member 401 around the axis with respect to the spacer 500 is restricted when the spacer 500 is fitted.
- a flex receiving portion 500 d is formed on the circumferential portion of the spacer 500.
- the flexible receiving portion 500d is disposed outside the spacer 500 without sandwiching the flexible substrate 6 extending from the wireless substrate 61 held by the spacer 500 between the first spacer divided body 510 and the second spacer divided body 520. It is a part for escaping and arranging.
- an R chamfer is formed on the ridge line in contact with the flexible substrate 6 of the flex receiving portion 500d.
- Rotation restricting portions 500e protruding outward from the circumference are formed at two locations on both sides of the flex receiving portion 500d.
- the rotation restricting portion 500e is a portion that engages with the case groove portion 20d when the second block portion 5 is stored in the case portion 20, and has a substantially triangular shape according to the case groove portion 20d. Thereby, rotation of the 2nd block part 5 at the time of inserting the 2nd block part 5 in the case part 20 is prevented.
- a large R chamfered portion 500f is provided on the outer periphery of the front end side of the spacer 500 (the side disposed on the hemispherical side of the case portion 20).
- the R chamfered portion 500 f comes into contact with the R portion of the inner wall of the case hemispherical portion 20 a, and the spacer 500 is automatically centered with respect to the case portion 20.
- Such a spacer 500 (first and second spacer divided bodies 510 and 520) is formed by injection molding using a resin material such as polycarbonate, ABS resin, polyacetal (POM), modified polyphenylene ether (PPE) (modified PPO). It is formed by.
- the modified PPO is advantageous in that cracks are less likely to occur in the assembled state because it is lighter and has higher mechanical strength than other resins.
- the second block part 5 is assembled as follows. First, the wireless substrate 61 on which the electronic component 63 is mounted is attached to the first spacer divided body 510. At this time, the ear 61a of the wireless board 61 is engaged with the wireless board rotation restricting portion 510b, and the wireless board 61 is inserted into the wireless board engaging portion 510a from the side. At this time, the flexible board 6 extending from the radio board 61 is arranged to come toward the flex receiving portion 500d.
- the second spacer divided body 520 is engaged from the side so that the wireless substrate 61 is sandwiched between the second spacer divided body 510 and the first spacer divided body 510. Then, the boss 510c of the first spacer divided body 510 and the fitting hole 520d of the second spacer divided body 520 are fitted together, and the boss 520c of the second spacer divided body 520 and the fitting hole 510d of the first spacer divided body 510 are fitted. And fit.
- the positive electrode contact member engaging portion 500 b is brought close to the spacer engaging portion 401 a of the positive electrode contact member 401.
- FIG. 32B when the positive contact member engaging portion 500b comes into contact with the spacer engaging portion 401a, the spacer engaging portion 401a is pushed and spread along the surface b1.
- the spacer engaging portion 401a returns to the original shape along the surface b3 by its own elastic force after passing through the surface b2 (FIG. 32). (C)). Accordingly, the spacer 500 and the first battery unit set 400 are held by the positive electrode contact member 401.
- the spacer engaging portion 401a is naturally expanded when the positive contact member engaging portion 500b comes into contact, and when the positive contact member engaging portion 500b is further pressed, a restoring force is generated on the surface b3.
- the two spacer engaging portions 401a press the spacer 500 in a direction to press the spacer 500 against the bottom surface of the positive electrode contact member 401, while the substrate contact portion 401b opposes the pressing force and the wireless substrate 61 is pressed.
- a force is pressed against the spacer 500 side. Therefore, it is preferable to set the spring characteristics of the positive electrode contact member 401 so that the resultant force of the pressing force by the two spacer engaging portions 401a is larger than the reaction force by the substrate contact portion 401b. Thereby, the spacer 500 can be held with respect to the positive electrode contact member 401 while maintaining the state where the substrate contact portion 401 b is pressed against the wireless substrate 61.
- the flexible substrate 6 is extended from between the two rotation restricting portions 500e of the spacer 500, and the bent portion of the flexible substrate 6 is disposed along the R chamfered portion of the flexible receiving portion 500d (step S101).
- step S102 the second block unit 5 to which the first battery unit set 400 is attached is inserted into the case unit 20. At this time, the state where the rotation restricting portion 500e of the spacer 500 is engaged with the case groove portion 20d of the inner wall of the case portion 20 is maintained.
- the second battery unit set 450 is placed on the negative electrode surface of the first battery unit set 400. Is placed so that the positive electrode surface comes into contact with it (step S103).
- the second battery unit set 450, the first battery unit set 400, and the second block unit 5 are further inserted into the case unit 20 by pushing the second battery unit set 450 into the case unit 20 (step S104). .
- step S105 when the negative electrode surface of the second battery part set 450 enters the inside of the case end 20g, the axis of the first block part 3 and the axis of the case part 20 are aligned, and the first block The part 5 is inserted into the case part 20 (step S105).
- step S106 When the end of the first block portion 3 reaches the case end 20g, the insertion operation is temporarily interrupted, and the dome gripping portion 10b of the dome portion 10 is gripped by tweezers or the like, and on the outer peripheral surface of the dome cylindrical portion 10c, A heat curing or UV curing adhesive 7 is applied (step S106).
- the dome portion 10 is put on the first block portion 3 protruding from the case end portion 20g, and the dome is fitted.
- the dome cylindrical portion 10c is engaged with the portion 300a (step S107).
- the first block portion 3 is urged and inserted until the case end portion 20g contacts the end surface 10d of the dome portion 10 (step S108).
- the adhesive 7 is cured while applying a load in the longitudinal direction of the housing 2 so that the dome 10 does not float from the case 20 (step S109). Thereby, the capsule medical device 1 shown in FIG. 34E is completed.
- FIG. 35 is a flowchart showing the operation of the capsule medical device 1.
- the reed switch 52 performs a switching operation in response to the external magnetic field (step S202).
- the power supply control unit 53a activates the power supply unit 53b (step S204).
- step S201: No when the external magnetic field is not applied (step S201: No), or when the application time of the external magnetic field is shorter than the predetermined time (step S203: No), the power supply control unit 53a causes the external magnetic field to be capsule-type medical again. Wait for application to device 1.
- the imaging control unit 43a sets the internal register 43c based on the operation setting information stored in the memory 54, and activates the imaging device 42 (step S205). In addition, the imaging control unit 43a discharges and resets the charge accumulated in each sensor pixel of the imaging element 42 before causing the illumination unit 30 to emit light (step S206).
- the illumination drive unit 53c supplies power to the illumination unit 30 to start light emission (step S207).
- the illumination drive unit 53c supplies power to the illumination unit 30 to start light emission (step S207).
- the imaging control unit 43a After the light emission of the illumination unit 30 is started, the imaging control unit 43a waits for a predetermined time to elapse (step S208: No). Then, when the predetermined time has elapsed (step S208: Yes), the imaging control unit 43a starts reading the electrical signal from the sensor pixel (step S209). The reason for waiting for the elapse of the predetermined time after the light emission of the illumination unit 30 is to read the signal after the voltage is restored and stabilized because the voltage temporarily decreases due to the light emission of the illumination unit.
- the signal processing unit 43b performs signal processing on the electrical signal read from the sensor pixel to generate an image signal, and adds related information to the image signal (step S210).
- Specific signal processing includes nonlinear processing for reducing the number of bits of the electrical signal.
- the related information includes light emission time information of the illumination unit 30, ID information of the capsule medical device 1 stored in the internal register 43c, and the like. These related information is added repeatedly, for example, three times in order to improve noise resistance.
- the modulation unit modulates the image signal output from the signal processing unit 43b and wirelessly transmits the image signal via the transmission antenna 62 (step S211).
- the power supply control unit 53a checks whether or not the voltage of the battery unit 4 is greater than or equal to a predetermined value (step S212). When the voltage is equal to or higher than the predetermined value (step S212: Yes), the operation returns to step S206. On the other hand, when the voltage is less than the predetermined value (step S212: No), the power supply control unit 53a stops the output from the power supply unit 53b and connects the battery to the constant resistance (step S213).
- assembling is performed by making a group of parts constituting the capsule medical device into blocks and inserting them into the capsule housing 2, thereby reducing the number of parts handled during assembly. Therefore, the assembly work can be performed easily and in a short time.
- the first to third lenses 201 to 203 are provided with surfaces that abut against each other and the surfaces that fit the lens frame 205 are provided. It is possible to determine the position of the component both in the axial direction and in the radial direction simply by dropping it into the frame 205 sequentially. Therefore, focus adjustment and axis adjustment of the objective lens unit are not necessary. A member for defining the distance between the lens surfaces and the like as in the prior art becomes unnecessary, and the number of components can be reduced. In addition, since the assembling work is simplified, it is possible to reduce factors that degrade the optical performance such as lens damage and dust adhesion during the work.
- the imaging element abutting portion 203f extending from the third lens 203 is directly abutted against the imaging element 42, so that the third lens 203 and the imaging element 42 are The distance between them can be determined uniquely. Therefore, focus adjustment and axis alignment work for the image sensor 42 are not necessary. Further, since the outside of the image sensor abutting portion 203f is sealed with an adhesive, it is not necessary to arrange a glass plate or the like that protects the light receiving surface of the image sensor 42, and the number of parts can be reduced and assembly work can be reduced. It becomes possible to simplify.
- each function part built in a capsule type medical device is not limited to what was demonstrated in the said embodiment.
- a so-called two-lens capsule medical device in which two imaging units are arranged on both sides of a capsule housing may be used. Even in this case, it is possible to easily perform the assembling work by blocking each of the two imaging units.
- the battery built in the capsule medical device is not limited to the two described in the above embodiment.
- the second battery unit set 450 may be omitted and only the first battery unit set 400 may be used.
- the first battery unit set 400 is directly connected to the negative contact spring 480.
- a desired number of second battery unit sets 450 may be inserted between the first battery unit set 400 and the first block unit 3.
- the illumination board 31 shown in FIG. 2 has a shape obtained by D-cutting two locations on the outer periphery of the ring. By D-cutting in this way, the flexible substrate 6 extending from the illumination substrate 31 can be easily bent from the base of the flexible substrate 6 (connection portion with the illumination substrate 31).
- the illumination part 30 or the like is accommodated in the case part 20 and covered with the dome part 10
- the area where the illumination substrate 31 comes into contact with the end face 10d of the dome cylindrical part 10c is reduced.
- the illumination board 31 may not be sufficiently pressed down.
- the illumination board 31 is lifted from the fixed position, and the regulation of the position of each illumination element 32 may become unstable.
- the entire shape of the illumination board 610 is formed in an annular shape, and one of both sides of the portion of the flexible board (extension portion 611) extending from the illumination board 610.
- the ear portion 612 is formed by cutting the portion. This makes it easy to bend the extended portion 611 from the base, and increases the contact area of the illumination substrate 610 with the end surface 10d of the dome cylindrical portion 10c. As a result, when the dome portion 10 is covered, the illumination substrate 610 can be sufficiently pressed by the end face 10d, and the position of each illumination element 32 can be stably maintained.
- the entire shape of the illumination board 620 is an annular shape
- ear portions 622 are provided on both sides of the extension portion 621, and on the inner peripheral side of the annular shape.
- the tongue 623 is provided with a tip protruding toward the inner diameter side of the inner periphery. Cuts are provided on both sides of the bellows 623, so that the bellows 623 can be deformed so as to be turned up in a direction perpendicular to the substrate surface of the illumination board 620.
- the protrusion amount of the tongue portion 623 toward the inner diameter side may be such that the tongue portion 623 can sufficiently come into contact with the outer periphery of the lens frame 205 inserted through the opening 624.
- the strength of preventing the illumination board 620 from being removed by the tongue portion 623 depends on the amount of protrusion that the tongue portion 623 protrudes from the circumference of the opening 624 to the inner diameter side, and the tip of the tongue portion 623. And the distance from the root to the root (end of the cut portion).
- the position where the bellows 623 is provided is not limited, but as shown in FIG. Further, the number of the bellows 623 is not particularly limited, and two or more bellows may be provided.
- Modification 3 When the illumination board 620 provided with the tongue portion 623 as described in the modification 2 is used, as shown in FIG. 38, the position of the outer periphery of the lens frame 205 that interferes with the tongue portion 623 (that is, the extension portion).
- a protrusion 208 may be provided on the outer periphery of the opposite side of 621. In this case, it is possible to reliably prevent the illumination substrate 620 from coming off the lens frame 205.
- the illuminating substrate 31 may be temporarily fixed to the lens frame 205 using a double-sided tape or an adhesive for positioning.
- temporary fixing is performed in this way, an extra man-hour is required for the use of an adhesive or the like.
- the adhesive or the like must be peeled off, so that it is difficult to redo the process and there is a possibility that the yield may be reduced due to the occurrence of a defect.
- a claw portion 210 that protrudes further than the guide portion 209 is provided on the upper portion of the portion 209.
- one or more (two in FIG. 39) concave portions 631 are formed by partially cutting out the position corresponding to the guide portion 209 on the inner periphery with an annular shape as a whole. Provide.
- the illumination substrate 630 is covered with the lens frame 205 so that the concave portion 631 is aligned with the guide portion 209, and after the concave portion 631 passes through the claw portion 210, the concave portion 631 is fitted into the guide portion 209. Thereby, the movement of the illumination substrate 630 in the circumferential direction is restricted, and the claw portion 210 prevents the illumination substrate 630 from coming off the lens frame 205.
- the illumination substrate 630 can be easily temporarily fixed to the lens frame 205 without using an adhesive or the like. Therefore, the man-hour for temporary fixing can be reduced, and positioning can be performed again. As a result, it is possible to suppress the occurrence of defects due to re-positioning.
- a guide wall 331 for positioning the substrate portion 640 is provided on the inner periphery of the spacer 300, and is temporarily fixed at a position facing the guide wall 331.
- a claw portion 332 is provided.
- One guide wall 331 and one claw portion 332 are preferably provided at positions on both sides of the flexible substrate 6.
- the guide wall 331 has a plane 333 parallel to the axis of the spacer 300.
- the substrate portion 640 is inserted into the spacer 300 while the flat portion 641, which is the end portion on the one flexible substrate 6 side of the substrate portion 640, is in contact with the flat surface 333, so that the position of the substrate portion 640 with respect to the spacer 300 is changed. Can be easily determined.
- the flexible substrate 6 can be easily temporarily fixed to the spacer 300 by engaging the end portion 642 of the substrate portion 640 on the other flexible substrate 6 side with the claw portion 332. Note that the amount of protrusion of the claw portion 332 toward the inner diameter side may be determined according to the size of the substrate portion 640.
- FIG. 42 is a top view illustrating an example of manufacturing a flexible substrate.
- the width b ( b ⁇ a) is narrowed.
- FIG. 43 is a cross-sectional view showing another example of manufacturing a flexible substrate.
- the thickness d 2 of the bent portion 662 may be made thinner than the thickness d 1 of the linear portion 661 of the flexible substrate 660.
- Such a flexible substrate 660 is produced, for example, by making the thickness of the cover lay (for example, 50 ⁇ m) in the linear portion 661 different from the thickness of the cover lay in the bent portion 662 (for example, 12.5 ⁇ m). Can do.
- FIG. 44 is a cross-sectional view showing still another example of manufacturing a flexible substrate.
- the thickness of the bent portion is made thinner than the thickness of the linear portion of the flexible substrate, for example, as shown in FIG. 44, the thickness of the cover lay is set to the linear portion 671 only on one surface of the flexible substrate 670.
- the thickness may be adjusted by making it different between the bent portion 672 and the bent portion 672. In this case, the manufacturing process of the flexible substrate can be simplified.
- FIG. 45 is a top view showing still another example of manufacturing the flexible substrate.
- the linear portion 681 of the flexible substrate 680 is formed of a resist made of thermosetting resin
- the bent portion 682 is formed of a cover lay made of polyimide resin. Since the polyimide resin has higher flexibility than the thermosetting resin, the flexible substrate 680 can be reliably bent at the bent portion 682.
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Abstract
Description
図1は、本発明の一実施の形態に係るカプセル型医療装置の構成を示す断面図である。図1に示すように、カプセル型医療装置1は、半球状を有するドーム部10及び筒部を有する有底のケース部20からなるカプセル形状の筐体2と、スペーサ300に各種機能部が組み付けられた第1ブロック部3と、電池部4と、スペーサ500に各種機能部が組み付けられた第2ブロック部5とを備える。第1ブロック部3に組み付けられた機能部と、第2ブロック部5に組み付けられた機能部とは、フレキシブル基板6によって電気的に接続される。第2ブロック部5、電池部4、及び第1ブロック部3は、この順にケース部20内に収納され、ケース部20と係合して蓋となるドーム部10により、筐体2内に密閉される。
このような照明部30の筐体2内部における位置は、照明基板31の開口33に対物レンズユニット200を挿通させることにより決定される。
ドーム部10は、半球状のドーム半球部10aと、ドーム半球部10aの外径と同一の外径を有する円筒形状のドーム把持部10bと、ドーム把持部10bよりも外径が小さくなるよう切り欠きが設けられ、ケース部20と嵌合されるドーム円筒部10cとを含む。ドーム半球部10aとドーム把持部10bとの境界には、成形時に生じるパーティングラインを配置しても良い。このようなパーティングラインにより、ドーム半球部10aとドーム把持部10bとの境界を容易に視認することができる。
ドーム把持部10bは、組み立て等の際に、鏡面仕上げ部分に触れずにドーム半球部10aを把持できるように設けられている。
また、ドーム部10の内周側には、第1ブロック部3等を筐体2の内部に組み付けた際の位置決めを行う内壁リブ10fが形成されている。
ケース部20は、半球形状のケース半球部20aと、ケース半球部20aの外径と同一の外径を有する円筒形状のケース円筒部20bとを含む。ケース半球部20aは、カプセル型医療装置1の長手方向の他方の端部となる部分である。
図7に示すように、スペーサ300は、全体として円筒形状の外形を有しており、円筒形状の中心軸を通る平面によって2分割された一対の分割体(第1スペーサ分割体310及び第2スペーサ分割体320)により構成されている。第1スペーサ分割体310及び第2スペーサ分割体320は、対物レンズユニット200、照明部30、撮像部40、及び制御部50を互いの間に挟み込んで保持する。
対物レンズユニット200は、第1~第3レンズ201~203と、絞り204と、これらの光学部品を位置決めして保持するレンズ枠205とを有する。
これらの撮像素子突き当て部203fは、円柱形状を有し、撮像素子42と当接する4つの突き当て面203gが光軸と直交する同一面に含まれるように形成されている。
レンズ枠205は、第1~第3レンズ201~203及び絞り204の光軸を一致させ、且つ、各レンズ面の間隔を規定して保持するために設けられる。レンズ枠205は、例えば、ポリカーボネート(PC)等の樹脂を用いた射出成形や、SUS又は黄銅等の金属等を用いた切削加工により作製される。レンズ枠205の色は、遮光のため、黒色とすることが好ましい。
負極接点バネ480は、筐体2内に収納された状態では弾性圧縮されており、制御基板51と第2電池部組450とを電気的に接続すると共に、筐体2内部の公差を吸収して、筐体2内の内蔵物を当該負極接点バネ480を境として両方向に付勢する。
まず、ステップS31において、対物レンズユニット200に撮像基板41を取り付ける。具体的には、まず、レンズ枠205の位置合わせ目印部205f(図14)を参照しながら、撮像素子突き当て部203fを、撮像基板41の開口44を介して撮像素子42の受光面42aに突き当てる。その後、撮像基板41と対物レンズユニット200とを、UV硬化型等の接着剤等を用いて仮固定する。
図18は、第1電池部組400の外観を示す斜視図である。第1電池部組400は、円盤型(ボタン型)を有する電池402と、電池402の正極面と接して導通を得るための正極接点部材401と、電池402と正極接点部材401とを一体化させる締結部材403とからなる。
正極接点部材401は、例えば厚さが0.1mm程度のバネ特性を有する金属部材である。正極接点部材401の外周部の対向する2ヶ所には、スペーサ500を保持する際に用いられるスペーサ係合部401aが、相対する向きとなるように設けられている。
まず、図32(a)に示すように、第1電池部組400の正極接点部材401に設けられた3つのL字曲げ部401cと、スペーサ500に設けられた3つの正極接点部材位置規制部500cとの目印にして、回転方向における位置を合わせる。
まず、スペーサ500の2つの回転規制部500eの間からフレキシブル基板6を延出させ、フレキ受け部500dのR面取りの部分にフレキシブル基板6の折り曲げ部分を沿わせるように配置する(ステップS101)。
カプセル型医療装置1に対し、磁石等を用いて外部から磁界が印加されると(ステップS201:Yes)、リードスイッチ52がこの外部磁界に反応してスイッチ動作を行う(ステップS202)。このスイッチ動作が所定の時間以上行われた場合(ステップS203:Yes)、電源制御部53aは、電源部53bを起動させる(ステップS204)。一方、外部磁界が印加されない場合(ステップS201:No)、又は、外部磁界の印加時間が所定の時間よりも短い場合(ステップS203:No)、電源制御部53aは、再び外部磁界がカプセル型医療装置1に印加されるのを待機する。
次に、フレキシブル基板6と一体的に形成されるフレキシブルな照明基板31の形状の変形例について説明する。
図2に示す照明基板31は、円環の外周の2ヶ所をDカットした形状をなしている。このようにDカットすることにより、照明基板31から延出するフレキシブル基板6を、フレキシブル基板6の根元(照明基板31との接続部分)から折り曲げ易くなる。しかしながら、それにより、ケース部20に照明部30等を収容してドーム部10を被せた際に、ドーム円筒部10cの端面10dに対して照明基板31が接触する面積が小さくなるため、端面10dによって照明基板31を十分に押さえ付けることができなくなる場合がある。その結果、照明基板31が定位置から浮き上がり、各照明素子32の位置に対する規制が不安定になるおそれがある。
次に、照明基板31の形状の別の変形例について説明する。
第1ブロック部3に照明部30を組み付ける際、照明基板31は、開口33に対物レンズユニット200(レンズ枠205)を挿通させた状態で保持されるが、照明基板31自体の位置は固定されていない。このため、第1ブロック部3をケース部20内に挿入してドーム部10を被せる際、作業者が照明基板31を押さえながら作業する必要が生じ、作業性の低下や作業時間の増加を招くおそれがある。
変形例2において説明したようなベロ部623が設けられた照明基板620を用いる場合、図38に示すように、レンズ枠205の外周の内、ベロ部623と干渉する位置(即ち、延出部621の対面側の外周)に突起部208を設けても良い。この場合、レンズ枠205からの照明基板620の抜けを確実に防止することが可能となる。
次に、照明基板31の形状の別の変形例について説明する。
第1ブロック部3に照明部30を組み付ける際、位置決めのため、照明基板31をレンズ枠205に対して両面テープや接着剤等を用いて仮固定する場合がある。しかしながら、このように仮固定を行う場合、接着剤等を用いる分だけ工数が余計にかかってしまう。また、位置決めを誤った際には接着剤等を剥がさなければならず、やり直しが困難であると共に、不良が発生して歩留まりが低下してしまうおそれもある。
次に、スペーサ300の変形例について説明する。
図2に示す負極接点バネ480が実装されたフレキシブルな基板部分640をスペーサ300に対して位置決めする際にも、両面テープや接着剤等を用いて基板部分640をスペーサ300に仮固定する場合がある。しかしながら、この場合も、仮固定の工数が余計にかかると共に、位置決めを誤った際のやり直しが困難という問題が生じる。
次に、フレキシブル基板6の変形例について説明する。
カプセル型医療装置1を組み立てる際には、各機能部を実装した基板間を接続するフレキシブル基板6を折り曲げながら、第1ブロック部3、電池部4、及び第2ブロック部5を筐体2内に収納する。その際、図41に示すように、作業者が意図しない位置でフレキシブル基板6が折れ曲がってしまうことがある(意図しない折り曲げ部6a、6b参照)。このような場合、フレキシブル基板6上のパターンが断線したり、フレキシブル基板6自体が破損してしまうおそれがある。
図42は、フレキシブル基板の作製例を示す上面図である。例えば、図42に示すように、フレキシブル基板650を筐体2に配置したときに直線状態を維持したい部分である直線部651の幅aに比べて、折り曲げ箇所としたい折り曲げ部652の幅b(b<a)を狭くする。
2 筐体
3 第1ブロック部
4 電池部
5 第2ブロック部
6 フレキシブル基板
7 接着剤
10 ドーム部
10a ドーム半球部
10b ドーム把持部
10c ドーム円筒部
10d 端面
10e 回転規制部
10f 内壁リブ
20 ケース部
20a ケース半球部
20b ケース円筒部
20c ケース嵌合部
20d ケース溝部
20e ケース内壁リブ
20f 平面部
20g ケース端部
30 照明部
31a 開口
31 照明基板
32 照明素子
33 開口
40 撮像部
41 撮像基板
42 撮像素子
42a 受光面
43 回路部
43a 撮像制御部
43b 信号処理部
43c 内部レジスタ
43d 発振回路
44 開口
50 制御部
50G 電子部品群
51 制御基板
51a 耳部
52 リードスイッチ
53 電源IC
53a 電源制御部
53b 電源部
53c 照明駆動部
54 メモリ
55 水晶振動子
60 無線通信部
61 無線基板
61a 耳部
62 送信用アンテナ
63 電子部品
64 パッド
200 対物レンズユニット
201 第1レンズ
201a、202a、203a 第1レンズ面
201b、202b、203b 第2レンズ面
201c レンズ枠突き当て部
201d、202d、203d レンズ枠嵌合部
201e 絞り受け部
202 第2レンズ
202e レンズ受け部
202c 絞り受け面
203 第3レンズ
203c レンズ突き当て部
203e 底面
203f 撮像素子突き当て部
203g 突き当て面
203h 側面領域
203i 位置合わせ目印部
204 絞り
204a 開口
205 レンズ枠
205a、205c、205d レンズ嵌合部
205b レンズ受け部
205e ギャップ形成部
205f 位置合わせ目印部
205g スペーサ嵌合部
205h 傾斜部
205i 照明基板導入部
205j 円筒部
205k スペーサ回転規制部
206a 挿入用開口
206b 入射光用開口
207 接着剤
208 突起部
209 ガイド部
210 爪部
300 スペーサ
300a ドーム嵌合部
300b 上端部
300c フレキ受け部
310 第1スペーサ分割体
310a、320a レンズ枠係合部
310b、320b レンズ枠回転規制部
310c、320c 基板係合部
310d、320d 基板回転規制部
310e、320e ボス
310f、320f 嵌合孔
320 第2スペーサ分割体
331 ガイド壁
332 爪部
400 第1電池部組
401 正極接点部材
401a スペーサ係合部
401b 基板接点部
401c L字曲げ部
401d 凸部
402、453 電池
403、454 締結部材
450 第2電池部組
451 絶縁シート
451b 延出部
451c 開口部
451d 傾斜部
452 接点板
452a 凸部
453a 正極面
453b 負極面
461 電池正極缶
462 負極
463 セパレータ
480 負極接点バネ
481 バネ部
482 突出部
483 中央平面部
484 切り欠き部
490 半田
500 スペーサ
500a 基板接点用開口
500b 正極接点部材係合部
500c 正極接点部材位置規制部
500d フレキ受け部
500e 回転規制部
500f R面取り部
510 第1スペーサ分割体
510a、520a 無線基板係合部
510b、520b 無線基板回転規制部
510c、520c ボス
510d、520d 嵌合孔
520 第2スペーサ分割体
610、620、630 照明基板
650、660、670、680 フレキシブル基板
611、621 延出部
612、622 耳部
623 ベロ部
631 凹部
641 平坦部
642 端部
6a、6b 意図しない折り曲げ部
651、661、671、681 直線部
652、662、672、682 折り曲げ部
673 カバーレイ
Claims (17)
- カプセル形状を有する筐体と、
少なくとも一方に撮像素子が設けられ、フレキシブル基板を介して連結された第1及び第2の基板と、
前記第1の基板を保持する第1の基板保持部材と、
前記第2の基板を保持する第2の基板保持部材と、
前記第1及び第2の基板保持部材の間に配置される電池と、
を備え、
前記第1及び第2の基板保持部材並びに前記電池は、前記第1及び第2の基板をそれぞれ保持した前記第1及び第2の基板保持部材の間に前記電池を挟み込んだ状態で前記筐体内に収納されていることを特徴とするカプセル型医療装置。 - 前記フレキシブル基板の内、前記第1の基板保持部材の一端側に配設される領域には、前記第1及び第2の基板保持部材の間に前記電池を挟み込んだ際に弾性変形して前記電池と接触する電池切片が設けられていることを特徴とする請求項1に記載のカプセル型医療装置。
- 前記筐体は、
筒部を有する有底の第1の筐体部材と、
カプセル形状を有し、前記第1の筐体部材と係合して前記第1の筐体部材の蓋となる第2の筐体部材と、
を備え、
前記第2の基板保持部材、前記電池、及び前記第1の基板保持部材は、前記第1の筐体部材の内部の底側からこの順で配置されており、
前記第2の筐体部材は、前記筒部に挿入された前記第1の基板保持部材を覆うと共に、前記電池切片を弾性圧縮した状態で、前記第1の筐体部材に嵌め込まれていることを特徴とする請求項2に記載のカプセル型医療装置。 - 撮像レンズ及び該撮像レンズを保持するレンズ保持枠を更に備え、
前記第1の基板保持部材は、前記筐体の長手方向と直交する方向に分割される2つの部材であって、前記レンズ保持枠の少なくとも一部を互いの間に挟み込むことにより、前記筐体の長手方向及び該長手方向と直交する方向における前記レンズ保持枠の位置を決定すると共に、前記第1の基板を互いの間に挟み込むことにより、前記筐体の長手方向と直交する方向における前記第1の基板の位置を決定する2つの部材を含むことを特徴とする請求項1に記載のカプセル型医療装置。 - 前記第1及び第2の基板保持部材の各々は、前記筐体内部に収納された状態で、前記筐体に対して長手方向及び該長手方向と直交する方向における位置を決定する位置決め部を有することを特徴とする請求項1~4のいずれか1項に記載のカプセル型医療装置。
- 前記電池は、前記第2の基板保持部材の前記第1の筐体部材の底側とは反対側の端部に取り付けられており、
前記第2の基板には、外部装置と通信を行う送信用アンテナが形成され、
前記第2の基板は、前記送信用アンテナの形成面が前記第1の筐体部材の底と対向するように、前記第2の基板保持部材に組み付けられ、
前記電池の前記第2の基板保持部材との接続面側には、前記第2の基板側に突出して前記第2の基板と電気的に接続される舌片であって、弾性力を有する舌片が設けられた第2の電池切片が取り付けられ、
前記第2の基板と前記電池とは、空間的に隔離されつつ、前記舌片を介して電気的に接続されることを特徴とする請求項3に記載のカプセル型医療装置。 - 前記第2の基板保持部材は、前記筐体の長手方向と直交する方向に分割された2つの部材であって、前記第2の基板を互いの間に挟み込むことにより、前記筐体の長手方向及び該長手方向と直交する方向における位置を決定する2つの部材からなることを特徴とする請求項6に記載のカプセル型医療装置。
- 前記電池とは異なる第2の電池であって、前記第1の基板保持部材と第1の電池との間に収納される第2の電池を更に備え、
前記第2の電池の前記第1の電池側端面には、弾性変形を生じない第3の電池切片が設けられていることを特徴とする請求項6に記載のカプセル型医療装置。 - 前記筐体の内壁に、前記フレキシブル基板が配設される溝部が形成されていることを特徴とする請求項1に記載のカプセル型医療装置。
- 外部からの磁力に応じて電源のオンオフを切り換えるスイッチを実装した第3の基板を更に備え、
前記筐体は、外周が円筒形状を有する部分を含み、
前記円筒形状を有する部分の外周の一部に平面部が形成され、
前記第3の基板の配置方向は、前記平面部の位置に応じて決定されていることを特徴とする請求項1に記載のカプセル型医療装置。 - 前記筐体の内壁には、前記フレキシブル基板が配設される溝部であって、周方向における位置が前記平面部とは異なる溝部が形成されていることを特徴とする請求項10に記載のカプセル型医療装置。
- 前記第2の筐体部材は、
透明な樹脂材料により形成された半球部と、該半球部と連結した該円筒部とを含むことを特徴とする請求項1~11のいずれか1項に記載のカプセル型医療装置。 - 前記円筒部と前記半球部との境界部には、成形時に生じたパーティングラインが設けられていることを特徴とする請求項12に記載のカプセル型医療装置。
- 少なくとも一方に撮像素子が設けられ、フレキシブル基板を介して連結された第1及び第2の基板の内の前記第1の基板を第1の基板保持部材に保持させる工程(a)と、
前記第2の基板を第2の基板保持部材に保持させる工程(b)と、
第1及び第2の筐体部材からなるカプセル形状を有する筐体の内部に、前記第2の基板保持部材、電池、前記第1の基板保持部材の順で収納する工程(c)と、
を含むことを特徴とするカプセル型医療装置の製造方法。 - 前記工程(a)の前に、前記フレキシブル基板の前記第1の基板保持部材の一端側に配設される領域に、前記工程(c)において収納した際に弾性変形して前記電池と接触する電池切片を取り付ける工程を更に含み、
前記工程(c)は、前記第2の筐体部材により、前記筒部に挿入された前記第1の基板保持部材を覆うと共に、前記第2の筐体部材を、前記電池切片を弾性圧縮した状態で前記第1の筐体部材に嵌め込むことを特徴とする請求項14に記載のカプセル型医療装置の製造方法。 - 前記工程(c)の前に、前記筐体に収納した際に前記第1の基板保持部材と対向する側の前記第2の基板保持部材の端部に、前記電池を取り付ける工程をさらに含むことを特徴とする請求項14又は15に記載のカプセル型医療装置の製造方法。
- 前記工程(c)は、前記電池と前記第1の基板保持部材との間に、前記電池とは異なる第2の電池であって、一方の端面に弾性変形を生じない電池切片が取り付けられた第2の電池を、前記弾性変形を生じない電池切片を第1の電池側に向けて挿入することを特徴とする請求項16に記載のカプセル型医療装置の製造方法。
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