WO2013027462A1 - 歯の歯垢除去に適用される口腔ケア装置 - Google Patents
歯の歯垢除去に適用される口腔ケア装置 Download PDFInfo
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- WO2013027462A1 WO2013027462A1 PCT/JP2012/064626 JP2012064626W WO2013027462A1 WO 2013027462 A1 WO2013027462 A1 WO 2013027462A1 JP 2012064626 W JP2012064626 W JP 2012064626W WO 2013027462 A1 WO2013027462 A1 WO 2013027462A1
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- unit
- care
- plaque
- site
- light
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
- A61B5/0088—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for oral or dental tissue
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- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B15/00—Other brushes; Brushes with additional arrangements
- A46B15/0002—Arrangements for enhancing monitoring or controlling the brushing process
- A46B15/0004—Arrangements for enhancing monitoring or controlling the brushing process with a controlling means
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B15/00—Other brushes; Brushes with additional arrangements
- A46B15/0002—Arrangements for enhancing monitoring or controlling the brushing process
- A46B15/0004—Arrangements for enhancing monitoring or controlling the brushing process with a controlling means
- A46B15/0006—Arrangements for enhancing monitoring or controlling the brushing process with a controlling means with a controlling brush technique device, e.g. stroke movement measuring device
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B15/00—Other brushes; Brushes with additional arrangements
- A46B15/0002—Arrangements for enhancing monitoring or controlling the brushing process
- A46B15/0016—Arrangements for enhancing monitoring or controlling the brushing process with enhancing means
- A46B15/0034—Arrangements for enhancing monitoring or controlling the brushing process with enhancing means with a source of radiation, e.g. UV, IR, LASER, X-ray for irradiating the teeth and associated surfaces
-
- 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
- A61B1/24—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
- A61B5/4538—Evaluating a particular part of the muscoloskeletal system or a particular medical condition
- A61B5/4542—Evaluating the mouth, e.g. the jaw
- A61B5/4547—Evaluating teeth
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/20—Power-driven cleaning or polishing devices using ultrasonics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/221—Control arrangements therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/224—Electrical recharging arrangements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
- A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
- A61C17/3409—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body
- A61C17/3481—Vibrating brush body, e.g. by using eccentric weights
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B2200/00—Brushes characterized by their functions, uses or applications
- A46B2200/10—For human or animal care
- A46B2200/1066—Toothbrush for cleaning the teeth or dentures
Definitions
- the present invention relates to an oral care device, and more particularly to an oral care device applied to dental plaque removal.
- Patent Document 1 Japanese Patent Laid-Open No. 2001-145645
- Patent Document 2 Japanese Patent Laid-Open No. 2001-170084
- Patent Document 3 Japanese Patent Laid-Open No. 2001-218624
- the brushed teeth are photographed with a camera built in the brush portion of the toothbrush and an image is displayed.
- Patent Document 4 Japanese Patent Application Laid-Open No. 2008-119154 proposes a function of accommodating deposits removed from the oral cavity with a cleaning tool and prompting confirmation that the deposits have been removed.
- Patent Document 5 Japanese Patent Publication No. 2008-532619
- the output or operation of the toothbrush can be adjusted according to the information received by the sensor. Furthermore, the structure which irradiates light from a toothbrush and performs optical whitening by a photochemical action is described.
- Non-Patent Document 1 “Einstein Stella plaque” homepage (RF) http://www.rfsystemlab.com/product/dental/ein_plaque/index.html)
- Non-Patent Document 2 “Intraoral Camera“ MIHARU ”
- the “” website http://www.shinwa-musen.co.jp/camera3/miharu.html proposes a wireless intraoral camera.
- the intraoral camera emits light of a predetermined wavelength to which only the plaque and resin react, receives the reflected light, converts the received light signal into a video signal, and outputs it as an image, thereby displaying the unpolished teeth. It has the function to provide in.
- JP 2001-145645 A Japanese Patent Laid-Open No. 2001-170084 JP 2001-218624 A JP 2008-119154 A Special table 2008-532619
- Non-Patent Documents 1 and 2 it can be confirmed by a video of unpolished material.
- the user when brushing the unpolished teeth, the user needs to estimate the unpolished part in the dentition only from the photographed image and apply a toothbrush to that part. Is difficult to estimate.
- An object of the present invention is to provide an oral care device that stores an oral care site and a plaque amount detected corresponding to the care site.
- An oral care device includes a care member for care of the oral cavity, a posture detection unit for detecting the posture of the care member, and a part for estimating a care part of the oral cavity based on the detected posture
- An estimation unit a light source that emits light of a predetermined wavelength to which plaque reacts, a photoelectric conversion unit that receives light and converts it into an electrical signal, and a light source that emits light to the care site, and reflected light from the care site
- An imaging unit that acquires image data based on the electrical signal converted by the photoelectric conversion unit, a plaque detection unit that detects the amount of plaque in the care site based on the image data acquired by the imaging unit, and site estimation
- a storage unit for storing the care site estimated by the unit and the plaque amount detected by the plaque detection unit for the care site in association with each other.
- the care site of the oral cavity and the plaque amount of the care site can be automatically detected, and both can be associated with each other and stored and managed in the memory.
- an electric toothbrush having a brush implanted on the surface of a housing will be described.
- the configuration of the embodiment is generally applied to an apparatus that can be used for oral care (tooth cleaning, brushing, etc.). be able to.
- a material used for oral care it can be applied to a device using an oral care member in which a resin component such as sponge, rubber, elastomer or the like and a brush and these resin components are combined instead of a toothbrush. .
- FIG. 1 shows a block diagram of a system including an electric toothbrush
- FIG. 2 shows an external appearance of the electric toothbrush
- FIG. 3 shows an internal configuration of the electric toothbrush.
- the electric toothbrush 1 includes a main body 2 that houses a motor 10 that is a drive source, and a vibration member 5 that is a vibration source that periodically moves (vibrates) in conjunction with the rotation of the motor 10. Therefore, the rotation period of the motor 10 corresponds to the vibration (movement) period of the electric toothbrush body.
- the main body 2 has a generally cylindrical housing, and a part of the housing also serves as a handle for a user to hold when brushing their teeth, that is, for gripping with a hand.
- the main body 2 is placed, a charger 100 for charging the placed electric toothbrush 1, and a display 110 for outputting various information such as a brushing result, Is provided.
- the main body unit 2 includes a switch SW that is operated by a user to input an instruction and receives an operation from the outside.
- the switch SW includes a switch 402 for turning on / off the power, a switch for switching an operation mode of the motor 10 to be described later, and a switch 403 for instructing start of detection of plaque.
- the main body 2 has a motor 10 (for example, a direct current motor), a drive circuit 12, a rechargeable battery 13 as a power source with a rated output of 2.4V for supplying power to each part, a charging coil 14 and the like in the housing.
- the rechargeable battery 13 is charged in a non-contact manner by electromagnetic induction only by placing the main body 2 on the charger 100.
- the drive circuit 12 includes a CPU (Central Processing Unit) 120 that performs various operations and controls mounted on a substrate (not shown), tables TB1 and TB2 in FIGS. 7 and 23, which will be described later, a program, and a memory that stores various setting values. 121, a timer 122 that counts time and outputs timing data, a data transmission unit 123, and the like.
- CPU Central Processing Unit
- the data transmission unit 123 performs wireless communication with the data reception unit 112 of the display device 110.
- the display device 110 includes a data receiving unit 112, an MPU (Micro Processing Unit) 113, and a display 111.
- the display 111 outputs various data such as the brushing result received by the data receiving unit 112 and the processing result of the MPU 113.
- a multi-axis (here, x, y, z three-axis) acceleration sensor 15 is provided inside the main body 2.
- the acceleration sensor 15 has an x-axis parallel to the brush surface, a y-axis coinciding with the longitudinal direction of the main body 2 and a z-axis perpendicular to the brush surface. Installed. That is, when the main body 2 is placed on the charger 100, the gravitational acceleration vector is parallel to the y-axis, and when the brush surface is directed upward, the gravitational acceleration vector is parallel to the z-axis. When 2 is horizontal and the brush surface is turned sideways, the gravitational acceleration vector is parallel to the x-axis.
- the output of each axis of the acceleration sensor 15 is input to the CPU 120 and used to detect the three-dimensional posture of the brush 210.
- the acceleration sensor 15 a piezoresistive type, a capacitance type, or a heat detection type MEMS (Micro Electro Mechanical Systems) sensor can be preferably used. This is because the MEMS sensor is very small and can be easily incorporated into the main body 2.
- the form of the acceleration sensor 15 is not limited to this, and an electrodynamic sensor, a strain gauge sensor, a piezoelectric sensor, or the like may be used.
- a band pass filter (low pass filter) for removing dynamic acceleration components and noise may be provided. Further, noise may be reduced by smoothing the output waveform of the acceleration sensor.
- the main body 2 has an LED (Light Emitting Diode) 400 corresponding to a light source that emits light of a predetermined wavelength (405 nm ultraviolet light) to which plaque reacts, and receives and converts it into an electrical signal corresponding to the amount of light received And a CCD (Charge Coupled Device) 401 which is a photoelectric conversion element to be output.
- LED Light Emitting Diode
- CCD Charge Coupled Device
- the LED 400 when light having a predetermined wavelength is irradiated into the oral cavity by the LED 400, only plaque or resin reacts to the irradiation light, and reflected light of red wavelength (635 nm) is transmitted from the plaque or resin to the CCD 401 by the reaction. Incident.
- the CCD 401 receives light and outputs an electrical signal corresponding to the amount of received light as an image signal.
- the CCD 401 is used as an image sensor using a PD (Photo Diode) photoelectric conversion element, but a CMOS (Complementary Metal Oxide Semiconductor) image sensor may be used instead.
- PD Photo Diode
- CMOS Complementary Metal Oxide Semiconductor
- the vibration member 5 includes a stem portion 20 fixed to the main body portion 2 side and a brush component 21 attached to the stem portion 20.
- a brush 210 is planted at the tip of the brush component 21. Since the brush part 21 is a consumable part, it is configured to be detachable from the stem portion 20 so that it can be replaced with a new one.
- the brush component 21 of the vibration member 5 includes the brush part 3 in which the brush 210 is disposed and the handle part 4 located on the main body part 2 side.
- the configuration in which the brush part 21 including the relatively long handle 4 is replaced is shown.
- the brush part 3 alone or the brush component including the brush 3 and the short handle is replaced. There may be. That is, all or part of the handle may be included in the main body.
- the stem portion 20 is made of a resin material.
- the stem portion 20 is attached to the main body portion 2 via an elastic member 202 made of an elastomer.
- the stem portion 20 is a cylindrical member whose tip (brush side end) is closed, and has a bearing 203 at the tip inside the tube.
- the tip of the eccentric shaft 30 connected to the rotating shaft 11 of the motor 10 is inserted into the bearing 203 of the stem portion 20.
- the eccentric shaft 30 has a weight 300 in the vicinity of the bearing 203, and the center of gravity of the eccentric shaft 30 is deviated from the center of rotation. A minute clearance is provided between the tip of the eccentric shaft 30 and the bearing 203.
- the electric toothbrush 1 further includes an electrode-type contact detection unit 50 for detecting the presence or absence of contact or approach.
- the contact detection unit 50 detects contact or proximity to a living body, that is, the buccal mucosa and the tongue, during brushing.
- the contact detection unit 50 includes an electrode unit 52 and a detection unit 54 for detecting impedance from the electrode unit 52.
- the electrode unit 52 includes an electrode (hereinafter also referred to as “back electrode”) 521 disposed on the back side of the brush unit 3 (the surface opposite to the surface to which the brush 210 is attached) and an electrode ( 522) (hereinafter also referred to as “main body electrode”).
- the main body electrode 522 is desirably provided on the back side of the main body 2 so as to be always in contact with the user's hand during brushing. This is because a force must be applied to the back surface of the main body 2 due to the principle of action and reaction.
- the body electrode 522 may be expanded to fit the user's fingertip.
- the detection unit 54 may be mounted in the drive circuit 12.
- the back electrode 521 and the main body electrode 522 may be made of a conductive resin material and integrally formed with a member of the attachment portion. According to this structure, since there is no gap between the members, waterproofness can be easily ensured and adhesion of dirt can be reduced. Or you may form with a metal sheet and may form a thin film with a spray paint. These electrodes 521 and 522 may be provided with irregularities in order to increase the surface area. Providing unevenness also produces an anti-slip effect. The shape of the irregularities is not limited.
- the back electrode 521 includes an electrode 61 formed inside the replaceable brush component 21 and a contact exposed at an end of the brush component 21 (contact surface with the main body 2).
- the electrode 62 is integrally formed.
- the contact electrode 62 functions as a terminal for electrical connection between the main body 2 side and the back electrode 521.
- a contact electrode 63 is provided on the end surface of the main body 2 (the side connected to the brush component 21).
- the contact electrode 63 is electrically connected to the drive circuit (substrate) 12 by a lead wire 64.
- the body electrode 522 is electrically connected to the drive circuit (substrate) 12 and the lead wire 65.
- these electrical components (electrodes 61, 62, 63 and lead wires 64, 65) for electrically connecting the back electrode 521 and the main body electrode 522 shown in FIG. Is also included.
- the detection unit 54 in the drive circuit 12 can detect the impedance by detecting the current flowing through the electric circuit of the electrode unit 52.
- the light emitting surface of the LED 400 and the light receiving surface of the CCD 401 in FIG. 1 are the back surfaces of the surface to which the brush 210 is attached, and are attached to the same surface as the back electrode 521.
- the light emitting surface of the LED 400 and the light receiving surface of the CCD 401 are covered and protected by a light transmitting member (not shown).
- the LED 400 and the CCD 401 are connected to a wiring pattern of a substrate on which the CPU 120 is mounted via lead wires (not shown). Thereby, the light emission operation of the LED 400 is controlled by a signal from the CPU 120, and an electrical signal generated by photoelectric conversion of the CCD 401 is output to the CPU 120.
- the back electrode may be attached to the handle part on the main body side.
- the internal structure of the electrode part can be further simplified, and the cost for replacing the brush parts can be reduced.
- the back electrode 521, the LED 400, and the CCD 401 may be detachable from the brush component 21. By doing in this way, even if the brush component 21 is replaced, the back electrode 521, the LED 400, and the CCD 401 can be reused.
- a closed loop through the human body may be formed without the main body electrode 522, so the main body electrode 522 is not included in the electrode portion 52. Also good.
- the LED 400 and the CCD 401 are mounted on the back side of the brush 210 so that the emitted light and the received light are not blocked by the brush and can be prevented from being contaminated with the plaque removed by the brushing.
- the mounting position is not limited to the back side.
- the brush 210 when the brush 210 is made of a material that transmits light having a wavelength corresponding to the wavelength of emitted light and light received, as shown in FIG. It may be arranged.
- LED400 and CCD401 are not limited to what is installed in the vicinity of the brush 210 which is a care member as mentioned above. You may make it provide in the edge part (refer the edge part 600 of FIG. 20) of the longitudinal direction of the column-shaped main-body part 2, and the opposite side to the side in which the brush 210 is provided. That is, when the user uses it for the purpose of confirming the image and the amount of plaque by imaging a desired portion in the oral cavity irrespective of the care site being brushed, the end 600 is provided at a position unrelated to the brush 210. You may do it.
- the CPU 120 of the electric toothbrush 1 detects that the drive control unit 500 for controlling the drive signal supply unit 580 that supplies a drive signal to the motor 10 and the switch SW are operated, and an operation signal corresponding to the operated switch.
- Operation receiving unit 505 for outputting, posture detecting unit 510 for detecting the posture of brush unit 3 including brush 210 that is a care member, and site estimation for estimating a brushing (care) site based on the detected posture Table 520, imaging unit 530, plaque detection unit 540 for detecting the estimated amount of plaque in the site, estimated site and the amount of plaque detected corresponding to the site
- Storage unit 550 for storing data in TB1, reading unit 560 for reading data from memory 121, and display unit 110 for displaying the read data
- a display control unit 570 outputs to the data transmitting unit 123, a.
- the imaging unit 530 controls the LED 400 to emit light when the operation reception unit 505 outputs an operation signal based on the operation of the switch 403. Reflected light in the oral cavity of the emitted light is received by the CCD 401, and an image signal obtained by photoelectric conversion is output to the imaging unit 530.
- the imaging unit 530 acquires image data that is digital data by removing noise (filtering) from the input image signal and converting the input image signal into a gradation value. In this way, the operation until light is emitted from the LED 400 and image data of photoelectric conversion by light reception by the CCD 401 is acquired is referred to as “imaging”.
- the plaque detection unit 540 detects the amount of plaque at the care site based on image data obtained by imaging. Specifically, the gradation value of each pixel of the image data is compared with a predetermined threshold value.
- the predetermined threshold includes a gradation value corresponding to a tooth image and a gradation value corresponding to a plaque image (red). Therefore, based on the comparison result, it is possible to detect the size of the tooth region and the plaque portion region in the image obtained by imaging the care site.
- the plaque detection unit 540 calculates ((plaque area size / tooth area size) ⁇ 100) (unit: percent) as a plaque amount.
- the drive control unit 500 outputs a control signal corresponding to the operation mode to the drive signal supply unit 580.
- the drive signal supply unit 580 generates a drive signal (for example, a pulse width modulation signal) based on the input control signal and supplies it to the motor 10.
- the control signal is a signal for instructing the cycle and duty ratio of the drive signal.
- the drive signal supply unit 580 generates a drive signal that is a pulse having a width corresponding to the cycle indicated by the control signal and the duty ratio, and continuously supplies the drive signal to the motor 10.
- a periodic pulse signal is continuously given to the motor 10 to control the rotation period of the motor 10.
- the eccentric shaft 30 When the rotating shaft 11 of the motor 10 is rotated by the drive signal, the eccentric shaft 30 also rotates with the rotation of the rotating shaft 11, but the eccentric shaft 30 turns around the rotation center because the center of gravity is shifted. Do exercise. Therefore, the movement of the tip of the eccentric shaft 30 is transmitted to the inner wall of the bearing 203, and the stem portion 20 and the brush component 21 attached thereto can be periodically moved (vibrated) at high speed. That is, the motor 10 serves as a drive source for moving the brush 210, and the eccentric shaft 30 converts the output (rotation) of the motor 10 into the vibration of the vibration member 5 as a vibration source (motion conversion mechanism). ).
- the rotation of the motor 10 is converted into a periodic motion of the brush 210 in conjunction with the rotation, and the periodic motion includes a vertical and horizontal reciprocating motion or a rotational motion due to the vibration of the brush 210.
- the user can perform brushing by holding the main body 2 by hand and applying a brush 210 that moves at high speed to the teeth.
- the CPU 120 monitors the continuous operation time using the timer 122, and may automatically stop the movement of the brush when a predetermined time (for example, 2 minutes) elapses.
- the eccentric shaft 30 that is a motion transmission mechanism is included in the vibration member 5, and in particular, the weight 300 is disposed in the vicinity of the brush 210. Therefore, the portion of the brush 210 can be vibrated efficiently.
- the vibration member 5 stem part 20
- the vibration of the vibration member 5 is difficult to be transmitted to the main body 2. Therefore, the vibration of the main body 2 and the hand when brushing teeth can be reduced, and the usability can be improved.
- the electric toothbrush 1 of the present embodiment estimates the brushing part based on the brush posture (posture information) detected by the acceleration sensor 15 and the detection result of the contact detection unit 50. Then, the plaque detection unit 540 detects the estimated amount of plaque for each part.
- the storage unit 550 stores the date and time of brushing, the estimated part, and the amount of plaque detected corresponding to the part in the table TB1 of the memory 121.
- FIG. 7 is a diagram showing an example of a table TB1 that stores the amount of plaque for each part.
- table TB1 stores the amount of plaque detected by plaque detecting unit 540 corresponding to each estimated part and the detected date and time in association with each other. The date and time is acquired based on time measurement data from the timer 122.
- the upper and lower dentitions are divided into “maxillary front cheek side”, “maxillary anterior tongue side”, “maxillary left cheek side”, “maxillary left lingual side”, “maxillary right cheek side”.
- Side Maxillary right tongue side, Mandibular front cheek side, Mandibular anterior tongue side, Mandible left cheek side, Mandible left tongue side, Mandible right cheek side, Mandibular right tongue side ”, are divided into 12 parts.
- the division of the dentition is not limited to this, and may be a broader division or a finer division.
- upper, lower, left and right meshing surfaces may be considered.
- FIG. 9 is a flowchart of a main routine for brushing evaluation
- FIGS. 10 to 13 are flowcharts showing details of each process of the main routine. Note that the processing described below is processing executed by the CPU 120 according to a program stored in the memory 121 unless otherwise specified.
- the emitted light from the LED 400 is irradiated to the brushing site, that is, on the surface where the brush 210 is implanted. It is assumed that the electric toothbrush 1 is changed so that the back surface faces the brushing part.
- the posture detection unit 510 detects the posture (tilt) of the brush based on the output of the acceleration sensor 15 (step S (hereinafter simply referred to as S) 10).
- the part estimation part 520 estimates a brushing part based on the attitude
- the estimated part is temporarily stored in the memory 121.
- the display control unit 570 outputs information on the estimated part to the display device 110 via the data transmission unit 123. In the display device 110, the part information is displayed on the display 111 (S60). Thereby, the user can confirm the present brushing site
- FIG. 11 is a flowchart of the posture detection process (S10).
- the posture detection unit 510 acquires the outputs Ax, Ay, and Az of x, y, and z from the acceleration sensor 15 (S100).
- Ax represents an acceleration component in the x direction
- Ay represents an acceleration component in the y direction
- Az represents an acceleration component in the z direction.
- A (Ax, Ay, Az) is called an attitude vector.
- an error is returned (S102), and the processing returns to FIG.
- the acceleration sensor output contains many dynamic acceleration components, it is difficult to accurately specify the direction of gravitational acceleration (that is, the three-dimensional posture of the brush).
- it determines with it being 1.2 g or less (it is NO at S101) the process of FIG. 11 is complete
- the processing of S100 and S101 may be repeated until acceleration sensor outputs Ax, Ay, Az with a combined vector size of 1.2 g or less are obtained.
- the threshold for error determination is not limited to 1.2 g, but may be other values.
- FIG. 14 and 15 are diagrams showing examples of acceleration sensor outputs Ax, Ay, Az for each brushing part.
- the CPU 120 determines whether the upper jaw or the lower jaw based on the output Az of the acceleration sensor in the z direction (S700).
- the determination is focused on the fact that the brush surface is upward rather than downward, and when brushing the lower jaw dentition, the brush surface is not lower than downward. If Az> 0 (YES in S700), the lower jaw (S801) is determined. If Az ⁇ 0 (NO in S700), the upper jaw (S701) is determined.
- the CPU 120 determines whether or not it is an anterior tooth based on the output Ay of the acceleration sensor in the y direction (S702).
- Ay ⁇ threshold value a NO in S702
- the CPU 120 determines whether it is the cheek side or the tongue side based on the output Ax of the acceleration sensor in the x direction (S704). This determination is focused on the fact that the direction of the brush is reversed between the cheek side and the tongue side. If Ax> 0 (YES in S704), it is determined as “upper front cheek side” (S705), and if Ax ⁇ 0 (NO in S704), it is determined as “upper front tongue side” (S706).
- the CPU 120 determines whether or not it is a meshing surface based on the output Ax of the acceleration sensor in the x direction (S707).
- the determination is focused on the fact that the brush surface is substantially horizontal and the output of Ax is very small.
- threshold value b> Ax> threshold value c YES in S707
- the upper jaw left engagement surface and the upper jaw right engagement surface are not particularly distinguished. This is because in the case of the meshing surface, there is little need to change the brushing operation on the left and right.
- the CPU 120 determines the direction of the brush surface based on whether Ax is greater than 0 (S709). This determination is focused on the fact that the direction of the brush surface is reversed between the cheek side and the tongue side. If Ax> 0 (YES in S709), it is determined that “maxillary right cheek side or maxillary left lingual side” (S710). If Ax ⁇ 0 (NO in S709), “maxillary left cheek side or maxillary right lingual side” Is determined (S712).
- the part determination process A is executed (S710, S711).
- the region determination process B is executed (S712, S713).
- the CPU 120 determines whether or not it is an anterior tooth based on the output Ay of the acceleration sensor in the y direction (S802).
- Ay ⁇ threshold d NO in S802
- the CPU 120 determines whether it is the cheek side or the tongue side based on the output Ax of the acceleration sensor in the x direction (S804). This determination is focused on the fact that the direction of the brush is reversed between the cheek side and the tongue side.
- Ax ⁇ 0 YES in S804
- Ax ⁇ 0 NO in S804
- the CPU 120 determines whether it is a meshing surface based on the output Ax of the acceleration sensor in the x direction (S807).
- the determination is focused on the fact that the brush surface is substantially horizontal and the output of Ax is very small.
- threshold e> Ax> threshold f YES in S807
- the lower jaw left engagement surface and the lower jaw right engagement surface there is no particular distinction between the lower jaw left engagement surface and the lower jaw right engagement surface. This is because in the case of the meshing surface, there is little need to change the brushing operation on the left and right.
- the CPU 120 determines the direction of the brush surface based on whether Ax is greater than 0 (S809). This determination is focused on the fact that the direction of the brush surface is reversed between the cheek side and the tongue side. If Ax> 0 (YES in S809), it is determined as “mandibular right cheek side or mandibular left lingual side” (S810). If Ax ⁇ 0 (NO in S809), “mandibular left cheek side or mandibular right lingual side” Is determined (S812).
- the part determination process C is executed (S811).
- the part determination process D is executed (S812, S813).
- the above determination algorithm is merely an example, and any determination algorithm may be used as long as the brushing part can be specified from the outputs Ax, Ay, and Az of the acceleration sensor 15.
- secondary variables obtained by appropriately combining Ax, Ay, and Az may be used for the determination.
- the secondary variable can be arbitrarily set, for example, Ay / Az, Ax ⁇ Ax + Ay ⁇ Ay, Az ⁇ Ax, and the like.
- the brushing part may be determined after converting the acceleration information Ax, Ay, Az of each axis into angle information (attitude angles) ⁇ , ⁇ , ⁇ .
- the x-axis angle with respect to the gravitational acceleration direction may be defined as the roll angle ⁇ , the y-axis angle with respect to the gravitational acceleration direction as the pitch angle ⁇ , and the z-axis angle with respect to the gravitational acceleration direction as the yaw angle ⁇ .
- the threshold used for determination can be determined from the results of clinical experiments or the like.
- Part determination process A process for determining whether the buccal side or the left tongue side or the left buccal side or the right lingual side of the dentition surface will be described. That is, “maxillary right cheek side or maxillary left lingual side”, “maxillary left cheek side or maxillary right lingual side”, “mandibular right cheek side or mandibular left lingual side” or “mandibular left cheek side or mandibular right lingual side” The part determination process for determining whether it is the cheek side or the tongue side (palate side) when it is determined will be described.
- FIG. 16 is a flowchart showing the part determination process A.
- the site estimation unit 520 determines whether or not the living body is almost always in contact with the electrode (back electrode) 521 disposed on the back surface of the brush unit 3 (S201A). For example, it is determined whether or not the ratio of the contact time during a certain time is 80% or more. The presence or absence of contact with the living body can be determined based on the impedance value detected by the detection unit 54 or the change thereof.
- FIG. 17 is a diagram schematically showing a circuit through the living body when the back electrode 521 is in contact with the living body and when it is not in contact with the living body.
- FIG. 17 (A) when the back electrode 521 is not in contact with the living body, an air portion is present, so that the impedance value is larger than that at the time of contact.
- FIG. 17B when the back electrode 521 is in contact with the living body, a closed loop circuit is formed through the back electrode 521. The value is small.
- contact / non-contact can be determined by detecting whether the impedance value is equal to or greater than a predetermined threshold value.
- the impedance threshold is determined in advance through experiments or the like.
- the living body when it is determined that the living body is not substantially in contact with the back electrode 521 (NO in S201A), it is further determined whether or not the living body is in intermittent contact with the back electrode 521 (S203A). For example, it is determined whether or not the ratio of the contact time during a certain time is 30% or more and less than 80%.
- the upper lingual left lingual side S204A. This is because the back surface of the brush portion 3 of the electric toothbrush 1 intermittently contacts the tongue when brushing the lingual side (palate side).
- FIG. 18 shows a specific example of the cheek side / lingual side determination method in the present embodiment.
- a pair of electrodes for applying current and voltage detection are provided on the back of the brush unit 3.
- a pair of electrodes may be provided.
- FIG. 19 to 21 show flowcharts of the part determination processes B, C, and D, respectively.
- the processes shown in these flowcharts are basically the same as the part determination process A shown in FIG.
- the upper jaw right cheek side (S202A) and upper jaw left lingual side (S204A) in FIG. 16 are different only in the point that differs according to the rough site determination result before the shift to the site determination process.
- the upper jaw left cheek side (S202B) instead of the upper jaw right cheek side (S202A) and the upper left tongue side (S204A) in the part determination process A of FIG. 16, the upper jaw left cheek side (S202B), respectively.
- S201B, S203B, and S205B in FIG. 19 are the same processes as S201A, S203A, and S205A in FIG.
- S201C, S203C, and S205C in FIG. 20 are the same processes as S201A, S203A, and S205A in FIG.
- S201D, S203D, and S205D in FIG. 21 are the same processes as S201A, S203A, and S205A in FIG.
- the current brushing sites are “maxillary front cheek side” (S705), “maxillary anterior tongue side” (S706), “maxillary meshing surface” (S708), and “maxillary right cheek side” (S202A).
- the determination on the cheek side and the tongue side is performed by detecting the impedance value for a certain period of time, so the determination result on the cheek side or the tongue side is the brushing part estimation process (S20 in FIG. 10). May be obtained only after a plurality of cycles.
- the part determination on the meshing surface may be omitted.
- CPU 120 compares the part indicated by the information estimated immediately before and stored in memory 121 with the part currently output by part estimation unit 520, and based on the comparison result, the brushing part is determined. It is determined whether or not the transition has occurred (step T5). Based on the determination result, while it is not determined that the brushing part has moved to another part (NO in step T5), the process of step T3 is repeated, but if it is determined that the brushing part has moved to another part (YES in step T5) ), The process proceeds to step T7.
- CPU120 determines whether the user operated switch 403 based on the operation signal which the operation reception part 505 outputs (step T7). While it is not determined that the operation has been performed (NO in step T7), the process returns to step T3, and the subsequent processes are similarly repeated.
- a process (routine RT) for detecting the amount of plaque is executed.
- step T9 If it is determined that the difference is within the predetermined angle range, that is, it is determined that the change has not been made (NO in step T9), the process of step T9 is repeated until a change is detected, but the difference is outside the predetermined angle range. If it is determined that the user has changed the electric toothbrush 1 (YES in step T9), the process proceeds to step T11.
- Step T11 in a state where the back surface of the flocked surface of the brush 210 faces the brushing site by holding the electric toothbrush 1, the imaging unit 530 controls the LED 400 to emit light (Step T11).
- the drive control unit 500 outputs a control signal for stopping the movement of the vibrating member 5 until the light is emitted and the imaging is finished.
- a drive signal for stopping the rotation of the motor 10 is supplied from the drive signal supply unit 580 (step T13).
- the rotation of the motor 10 is stopped and the brushing is stopped, it is possible to notify the user that the brush is arranged at a predetermined portion and the timing of imaging and the movement of the brush is prohibited.
- the drive signal does not necessarily have to stop the movement, but may suppress the movement.
- the period or the duty ratio indicated by the control signal may be changed to increase the period of the periodic motion of the brush 210 that is interlocked with the rotation of the motor 10. More specifically, the time required for one reciprocation is lengthened when the periodic motion is a reciprocating motion of vertical movement or left-right movement, and the time required for one rotation is lengthened when it is a rotational motion.
- blurring of an image acquired by imaging may be corrected by image processing instead of changing the cycle of movement.
- the imaging unit 530 acquires image data from the image signal (steps T15 and T17).
- the drive control unit 500 restores the cycle or duty ratio indicated by the control signal. Thereby, the period of the periodic motion of the brush 210 interlocked with the rotation of the motor 10 is restored (step T19).
- the user can brush the next part by holding the electric toothbrush 1 so that the brush 210 faces the brushing part.
- the plaque detecting unit 540 detects the amount of plaque at the site estimated in step T3 based on the image data from the imaging unit 530 (step T21).
- the storage unit 550 stores the detected amount of plaque in the table TB1 in association with the part estimated in step T3 and the timing data of the timer 122 (step T23). ).
- the CPU 121 determines whether or not the detection of the amount of plaque has been completed for all the parts shown in FIG. 8 based on the data in the table TB1 (step T25). If it is determined that there is a part where the amount of plaque is not detected (NO in step T25), the process returns to step T3, and the process for the next part is performed in the same manner, but the amount of plaque is detected for all parts. If it is determined that YES (YES in step T25), the process proceeds to step T27.
- step T27 the information stored in the table TB1 by the processing of steps T3 to T25 at the time of the current toothbrush is read by the reading unit 560, and the display 111 of the display unit 110 is displayed by the display control unit 570 via the data transmission unit 123. Is displayed (step T27).
- the display control unit 570 reads the plaque amount of each part from the table TB1 of the memory 121 by the reading unit 560. For example, the display control unit 570 sets the plaque amount to “0 to 5%”, “5 to 10%”, and “10% to”. And only “0-5%” is evaluated as “OK”. The ranking and evaluation results are transmitted to the display 110.
- a tooth row is drawn on the display 111 of the display device 110, and colors corresponding to 10% to (“OK” is white, “5 to 10%” is yellow, “10%” is “ Lights up in red. By viewing such a display, the user can intuitively grasp in which part of the dentition dental plaque remains and brushing is insufficient.
- the ranking and evaluation results may be displayed on the display 111 of the display device 110 by the display control unit 570 via the data transmission unit 123 every time a part is estimated during brushing.
- the brushing part is estimated by the posture detection unit 510 and the part estimation unit 520 in the same manner as in step T3 (step S3). T29).
- the display control unit 570 notifies the fact that the brushing is continued by blinking the part of FIG. 22 on the display 111 (step T31). This prompts the user to continue brushing for plaque removal for the site during the blinking period (for example, 10 seconds).
- a drive signal for reliably removing plaque at the site estimated in step T29 is supplied to the motor 10 (step T35).
- the reading unit 560 searches the table TB1 based on the part estimated in step T29, and based on the search result, the most recently stored tooth among the plaque amounts corresponding to the part from the table TB1. Read the amount of dirt. Based on the read plaque amount, data corresponding to the plaque amount is read from the table TB2 (step T33).
- Drive control unit 500 outputs a control signal based on the read data.
- a table TB2 is stored in advance in the memory 121 for each part.
- the data of the table TB2 is prepared by experiment.
- the table TB2 stores the frequency (unit: Hz) for determining the period of the drive signal for removing the plaque amount and the Duty ratio for each plaque amount for the corresponding part.
- brushing can be performed with a drive signal based on an appropriate period and Duy ratio for removing plaque at a site desired by the user in a predetermined period notified in step T31. That is, in order to remove plaque at a desired site, the brushing cycle, which is a periodic motion of the brush 210, is appropriately changed.
- the CPU 120 determines whether or not the switch 403 has been operated based on the output of the operation reception unit 505 (step T37). If it is determined not to be operated (NO in step T37), the process returns to step T35 and the brushing continues. On the other hand, the user operates switch 403 if he / she wishes to confirm the amount of plaque since the above-mentioned blinking display has been completed and the desired portion of plaque has been removed.
- a routine RT including steps T9 to T21 described above is executed.
- the amount of plaque after brushing for the part estimated in step T29 is detected, and the information corresponding to the part of the table TB1 is updated using the detected amount of plaque, and the detected relevant part is detected.
- the plaque amount of the part (the updated plaque amount) is displayed on the display 111 (step T39). The user can determine from the display whether or not the unpolished plaque has been removed.
- step T41 After the display, a part estimation process is performed (step T41). Based on the estimation result, it is determined whether or not the user has moved the brushing part to another part (step T43). If it determines with having moved to another site
- step T45 If it is determined that the brushing motion stop request is not made (NO in step T45), the process returns to step T41, and the subsequent processing is repeated in the same manner, but if it is determined that the stop request is made (step step).
- the drive control unit 500 outputs a control signal for stopping the brushing.
- the drive signal supply unit 580 stops supplying the drive signal to the motor 10, and the motor 10 stops (step T47).
- the process of FIG. 9 ends.
- the dental plaque detecting unit 540 and the table TB1 are provided in the electric toothbrush 1, but the electric toothbrush 1 may be replaced by the MPU 113 of the display 110, or may be provided in both.
- ⁇ Other embodiments> when the switch 403 for instructing plaque detection is operated (YES in step T7), the detection of the plaque amount is started. Detection of the amount of plaque may be started when a change in the brushing site is detected.
- the LED 400 and the CCD 401 are mounted in the manner shown in FIG. 2, it is necessary to determine whether to move in step T9, but they are attached in the manner shown in FIG. 5 instead of FIG. In such a case, it is possible to omit the determination of change of ownership.
- the LED 400 emits light only during the imaging period, and imaging including light emission of the LED 400 is stopped during the period from the end of imaging until it is detected that the brushing part has moved. Can be suppressed.
- the plaque amount is detected after the site is estimated, but plaque detection may be performed independently of the site estimation. That is, when the user operates the switch SW and the operation reception unit 505 inputs an imaging instruction, the imaging unit 530 may capture an image according to the imaging instruction. As a result, when the operation is performed, imaging of the part to which the brush 210 is applied, detection of the amount of plaque, and display of the detection result on the display 111 (and / or display of the captured image) may be performed. .
- processing for recording the plaque amount of all parts in the table TB1 steps T3 to T25
- processing for brushing for removing plaque based on the recording result steps T27 to T47
- the order of processing is not limited to this.
- processing for removing plaque (steps T27 to T47) based on the information may be performed when the power is turned on.
- the CPU 120 is an amount in which the plaque amount is not evaluated as “OK” among all the parts, and changes to the plaque amount for a predetermined period (for example, the latest three days). 22 is detected, and a message to that effect is displayed on the display 111 of the display 110 as shown in FIG. Accordingly, the user can determine that there is a wrinkle that passes through the brushing of the part.
- the CPU 120 compares the amount of plaque detected last time with the amount of plaque detected this time for each part, and the comparison result Based on the above, it can be determined that the part where the plaque amount has not changed is the part where the plaque has not been removed by hand polishing. Therefore, it is possible to display the guidance that the portion is always insufficiently polished (the user has a habit of passing through brushing) via the display 110.
- the display unit 110 notifies that it is an important brushing point ("please continue brushing this tooth for 10 seconds"). It is good.
- the table TB1 for each user may be read from the memory 121 and transmitted to an external computer (server device) (not shown) by the data transmission unit 123 and managed by the memory of the external computer. If the dentist can access the memory of the external computer, the dentist can easily make regular dental guidance and an appropriate treatment plan for each user based on the information in the table TB1 for each user.
Abstract
Description
図1~図3を参照して、電動歯ブラシの構成を説明する。
図2では、LED400およびCCD401は、出射光および受光が刷毛により遮られることがないように、またブラッシングにより除去された歯垢で汚れるのを回避できるようにブラシ210の背面側に装着されるが、装着の位置は背面側に限定されない。
図6を参照して、電動歯ブラシ1の機能構成について説明する。図6では、CPU120が有する機能が関連する周辺回路・部分と関連付けて示される。図示されるCPU120の機能は、メモリ121に予め格納されたプログラムをCPU120が読出し実行することにより実現されると想定するが、プログラムと回路の組合せで実現されるとしてもよい。
駆動制御部500は動作モードに応じた制御信号を駆動信号供給部580に出力する。駆動信号供給部580は、入力する制御信号に基づく駆動信号(たとえばパルス幅変調信号)を生成し、モータ10に供給する。ここで、制御信号は、駆動信号の周期とDuty(デューティー)比を指示するための信号である。駆動信号供給部580は、制御信号が指示する周期とDuty比に応じた幅のパルスである駆動信号を生成し、モータ10に連続的に与える。モータ10に周期的なパルス信号が連続して与えられることで、モータ10の回転周期が制御される。
歯の種類(上顎/下顎、臼歯/切歯など)や部分(舌側/頬側、歯面/噛み合わせ面など)によって、食物残渣や歯垢の付き方が異なる。よって、磨き残しの歯垢は、歯列の部位ごとに相違する。それゆえ、適切なブラッシングが行われているかどうかの評価値ともなる歯垢量は、部位ごとに行なうことが望ましい。
(姿勢の検出)
図11は姿勢検出処理(S10)のフローチャートである。
図12および図13は部位推定部520によるブラッシング部位の推定処理(S20)のフローチャートである。また図14および図15は、ブラッシング部位ごとの加速度センサ出力Ax、Ay、Azの一例を示す図である。
CPU120は、y方向の加速度センサの出力Ayに基づいて前歯か否かを判定する(S702)。前歯をブラッシングするときは本体部2が比較的水平になるが、臼歯をブラッシングするときは唇との干渉があるため本体部2が斜めにならざるをえないことに着目した判定である。Ay≦閾値aの場合は(S702でNO)上顎前歯と判定される(S703)。
CPU120は、y方向の加速度センサの出力Ayに基づいて前歯か否かを判定する(S802)。前歯をブラッシングするときは本体部2が比較的水平になるが、臼歯をブラッシングするときは唇との干渉があるため本体部2が斜めにならざるをえないことに着目した判定である。Ay≦閾値dの場合は(S802でNO)下顎前歯と判定される(S803)。
右頬側または左舌側の歯列面、あるいは、左頬側または右舌側の歯列面と判定された場合に頬側か舌側かを判定する処理について説明する。つまり、「上顎右頬側または上顎左舌側」、「上顎左頬側または上顎右舌側」、「下顎右頬側または下顎左舌側」あるいは「下顎左頬側または下顎右舌側」と判定された場合に、頬側か舌側(口蓋側)かを判定するための部位判定処理について説明する。
部位推定部520は、ブラシ部3の背面に配置された電極(背面電極)521に生体がほぼ常時接触されているか否かを判断する(S201A)。たとえば、一定時間中、接触している時間の割合が80%以上であるか否かを判断する。生体への接触の有無は、検出部54が検出したインピーダンス値、あるいは、その変化に基づいて判定することができる。
本実施の形態によれば、歯垢検出を指示するためのスイッチ403が操作されると(ステップT7でYES)、歯垢量が検出開始されるとしているが、スイッチ403の操作に代替してブラッシング部位の変移を検出すると、歯垢量が検出開始されるとしてもよい。また、本実施の形態でLED400とCCD401は図2の態様で装着される場合には、ステップT9の持替えの判定が必要とされるが、図2に代替して図5の態様で装着される場合には持替えの判定を省略することができる。
Claims (11)
- 口腔をケアするためのケア部材(3)と、
前記ケア部材の姿勢を検出するための姿勢検出部(510)と、
検出された姿勢に基づいて口腔のケア部位を推定するための部位推定部(520)と、
歯垢が反応する所定波長の光を出射する光源(400)と、
光を受光し電気信号に変換する光電変換部(401)と、
前記光源によりケア部位に対し光を出射させ、ケア部位からの反射光の前記光電変換部によって変換された電気信号に基づき画像データを取得する撮像部(530)と、
前記撮像部が取得した画像データに基づき、ケア部位の歯垢量を検出するための歯垢検出部(540)と、
前記部位推定部により推定されるケア部位と、当該ケア部位について前記歯垢検出部により検出される歯垢量とを対応付けてメモリに記憶するための記憶部(550)と、を備える、口腔ケア装置。 - 前記ケア部材を周期的に運動させるための駆動部(10)と、
前記駆動部を制御する駆動制御部(500)と、をさらに備え、
前記駆動制御部は、
前記撮像部が前記光源により光を出射させるときは、前記ケア部材の運動の周期が長くなるように、前記駆動部を制御する、請求項1に記載の口腔ケア装置。 - 前記ケア部材を周期的に運動させるための駆動部(10)と、
前記駆動部を制御する駆動制御部(500)と、をさらに備え、
前記駆動制御部は、
前記撮像部が前記光源により光を出射させるときは、前記ケア部材の運動が停止するように、前記駆動部を制御する、請求項1に記載の口腔ケア装置。 - 前記駆動制御部は、
前記部位推定部により推定されるケア部位に対応して前記メモリに記憶されている歯垢量に基づき、前記周期が変更されるように前記駆動部を制御する、請求項2または3に記載の口腔ケア装置。 - 前記駆動部は、前記ケア部材を周期的に振動させる、請求項4に記載の口腔ケア装置。
- 前記駆動部は、前記ケア部材を周期的に回転させる、請求項4に記載の口腔ケア装置。
- 撮像を指示するための操作を受付ける操作受付部(505)を、さらに備え、
前記撮像部は、前記操作受付部が操作を受付けたとき、前記光源により光を出射させる、請求項1に記載の口腔ケア装置。 - 前記撮像部が出力する画像データを表示部に表示する、請求項1に記載の口腔ケア装置。
- 前記ケア部位について前記歯垢検出部により検出される歯垢量を表示部に表示する、請求項1に記載の口腔ケア装置。
- 前記メモリに記憶された情報を表示部に表示する、請求項1に記載の口腔ケア装置。
- 前記ケア部材を取付けるための取り付け面を、さらに備え、
光源の光出射面と光電変換部の受光面は、前記取り付け面の背面に設けられる、請求項1から7のいずれかに記載の口腔ケア装置。
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CN201280041064.5A CN103764063B (zh) | 2011-08-24 | 2012-06-07 | 用于去除牙齿牙垢的口腔护理装置 |
DE112012003494.5T DE112012003494B4 (de) | 2011-08-24 | 2012-06-07 | Mundpflegevorrichtung in der Anwendung zur Entfernung von Zahnbelag |
US14/237,817 US8839476B2 (en) | 2011-08-24 | 2012-06-07 | Oral care apparatus applied to the removal of dental plaque |
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WO2013027462A9 (ja) | 2014-01-03 |
DE112012003494B4 (de) | 2023-03-30 |
CN103764063B (zh) | 2016-06-15 |
US8839476B2 (en) | 2014-09-23 |
JP5796408B2 (ja) | 2015-10-21 |
JP2013042906A (ja) | 2013-03-04 |
DE112012003494T5 (de) | 2014-05-22 |
CN103764063A (zh) | 2014-04-30 |
US20140199651A1 (en) | 2014-07-17 |
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