JP2013022401A - Intraoral cavity mounting instrument equipped with wireless ic tag and intraoral cavity mounted instrument searching system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the living body of a user from affecting a health damage caused by electric wave generated from an intraoral cavity mounted instrument equipped with a wireless IC tag.SOLUTION: The system is based on a knowledge that when a user mounts the intraoral cavity mounting instrument in the oral cavity, by cutting off a transmitting circuit of the electric wave, the health damage of the user when the user mounts the intraoral cavity mounting instrument in the oral cavity, can be prevented. Particularly, the intraoral cavity mounting instrument equipped with the wireless IC tag is such an intraoral cavity mounting instrument with the wireless IC tag that includes a circuit on-off means for cutting off the circuit when the intraoral cavity mounting instrument is mounted in the oral cavity, and connecting the circuit when the intraoral cavity mounting instrument is taken away from the oral cavity.

Description

  The present invention relates to an intraoral wearing device provided with a wireless IC tag that transmits a radio signal that is switched on when the intraoral wearing device is disconnected and is not worn. In addition, the present invention provides an intraoral wearing device including a wireless IC tag that transmits a wireless signal, and a reader that detects a signal transmitted from the intraoral wearing device and searches for the location of the intraoral wearing device. It relates to a search system.

  In recent years, Japan's aging has advanced remarkably, and the elderly population over 65 years old has exceeded 20% of the total population, and now it has become the country with the world's top elderly. With such aging, the demand for dentures as intraoral appliances is also increasing.

  As memory age declines and forgetfulness increases with age, the problem of forgetting places where the elderly have placed dentures in nursing homes is increasing. In particular, for dentures (including local dentures and all dentures), maintaining the hygienic state of the resin on the floor is important for maintaining the health of the wearer, and is frequently attached and detached. For this reason, it tends to be misplaced. In addition, orthodontic treatment devices that can be attached to and detached from the oral cavity have also had the problem of being misplaced somewhere when removed for cleaning. Therefore, for example, by positioning a microchip such as GPS in an intraoral mounting device that can be attached and detached by a patient such as a denture or an orthodontic treatment device, the owner of the intraoral mounting device can be specified or removed. There is a technique for searching for the location of an internal device (for example, Patent Document 1).

  However, the embedding of the chip into a device to be worn in the oral cavity causes various problems.

  One is that GPS has an unusually low sensitivity indoors and lacks accuracy, and may not be detected in some cases.

  Next, there is a problem of radio waves generated from the chip. That is, there is a problem that radio waves generated from the chip in the intraoral wearing device cause health damage not only in the user's oral cavity but also in the whole living body.

  Furthermore, it is a problem of securing a power source for supplying power to the chip in the intraoral device. For example, when a battery is incorporated in the oral cavity as a power source, it will be necessary to replace the battery. Replacement of the battery in the intraoral appliance has problems such as waterproofing, and it is difficult for the user to perform it. The wearing device cannot perform a sufficient function. That is, normally, in order to make a GPS chip or the like incorporated in an intraoral wearing device function, it is necessary to generate radio waves constantly or intermittently and continuously, and battery consumption becomes intense.

JP-A-11-253481

  Therefore, the present invention controls the stop / start of wireless transmission triggered by attachment / non-installation in the oral cavity. More specifically, the present invention provides an oral appliance equipped with a wireless IC tag by incorporating a circuit opening / closing means. The purpose is to prevent health damage caused by radio waves generated from the user's living body.

  Moreover, an object of this invention is to suppress the power consumption of the chip | tip in an intraoral mounting device.

  The present invention basically cuts a radio wave transmission circuit when a user wears an intraoral wearing device in the oral cavity, prevents a user's health damage due to wearing, and consumes power of the chip. Suppress. That is, in the present invention, when the intraoral wearing device is mounted in the oral cavity, the transmission circuit is cut off, and when the intraoral mounting device is taken out of the oral cavity and is not mounted, the transmission circuit is connected. A radio signal is transmitted constantly or when a search radio wave is detected.

  The intraoral mounting device of the present invention is an intraoral mounting device including a wireless IC tag. The wireless IC tag 100 includes an IC chip 10 that records information and an antenna 20 that wirelessly transmits information recorded on the IC chip 10. Further, the wireless IC tag 100 cuts the circuit when mounted in the oral cavity and is placed outside the oral cavity. A circuit 30 connected to the circuit opening / closing means 40 for connecting the circuit when removed and not mounted is included. The circuit 30 also plays a role of supplying power in the semi-passive and active type IC tags.

  As described above, the intraoral-mounted device according to the present invention does not generate radio waves when worn, and generates radio waves when detached, because the wireless IC tag 100 includes the circuit opening / closing means 40. That is, no radio waves are generated when the intraoral device is mounted, and thus the health of the user is not harmed. In addition, since the circuit is disconnected when the intraoral device is mounted, power consumption by the chip is suppressed, which contributes to a longer battery life in the semi-passive and active type wireless IC tags. Further, the wireless IC tag 100 is formed in a thin sheet shape, and can be easily accommodated, for example, even in a resin part having a thin denture, and the user feels uncomfortable when the denture is mounted in the oral cavity. Absent.

  In the first aspect of the present invention, the circuit opening / closing means 40 opens and closes the circuit by physical means. For example, a micro switch. That is, the circuit opening / closing means 40 includes a switch 44 that opens and closes the circuit, and a pressing means 50 that presses the switch 44 and causes the switch 44 to disconnect the circuit when the intraoral device is mounted in the oral cavity.

  Specifically, the pressing means 50 may be a water-absorbing expansion member that presses the switch 44 by absorbing and expanding moisture in the oral cavity and contracts when the absorbed moisture dries.

  Specifically, the pressing means 50 may be a magnet that presses the switch 44 by a magnetic force.

  In the second aspect of the present invention, the circuit opening / closing means 40 is a relay. That is, the radio wave transmission circuit is electrically opened and closed using a relay. The relay includes a power generation unit 42 that generates power only when the intraoral wearing device is mounted in the oral cavity, and a switch 44 in the relay that disconnects the circuit when the power generation unit 42 generates power.

  Specifically, the power generation means 42 may be a thermoelectric conversion element 46. The thermoelectric conversion element 46 has a contact surface 46a that comes into contact with the oral mucosa and a non-contact surface 46b that does not come into contact with the oral mucosa when the intraoral mounting device is mounted in the oral cavity. Thereby, the thermoelectric conversion element 46 generates electric power by the temperature difference between the temperature of the contact surface 46a and the temperature of the non-contact surface 46b.

  Specifically, the power generation means 42 may be a water battery 48. The water battery 48 generates electric power by moisture in the oral cavity when the intraoral wearing device is mounted in the oral cavity.

  An intraoral-mounted device searching system according to the present invention includes an intraoral-mounted device including the above-described wireless IC tag, and a reader that receives radio waves transmitted from the wireless IC tag 100 and reads information recorded on the IC chip 10. including.

  In the intraoral appliance search system according to the present invention, the wireless IC tag 100 receives radio waves transmitted from a reader, converts the received radio waves into electromotive force, and is stored in the ID chip 10 for the reader. It may be a passive IC tag that transmits the information that is being transmitted.

  In the intraoral appliance search system according to the present invention, the wireless IC tag 100 receives a radio wave transmitted from a reader, activates a built-in power source when the radio wave is received, On the other hand, it may be a semi-passive IC tag that transmits information stored in the ID chip 10.

  As described above, the present invention prevents the health damage caused by the radio waves generated from the intraoral wearing device to the user's living body since the radio wave transmission circuit is disconnected when the intraoral wearing device is worn. be able to.

  Moreover, since the circuit is cut | disconnected at the time of mounting | wearing of an intraoral mounting device, this invention can suppress the power consumption of the chip | tip embedded in the intraoral mounting device.

FIG. 1 shows an example of a circuit diagram of a wireless IC tag used in the present invention. FIG. 1 shows an example in which the circuit has a passive RFID structure. FIG. 2 shows an example of a circuit diagram of a wireless IC tag having a passive RFID structure used in the present invention. FIG. 2 shows an example in which a switch pressing means is used as the circuit opening / closing means. FIG. 3 shows an example of a circuit diagram of a wireless IC tag having a passive RFID structure used in the present invention. FIG. 3 shows an example in which a magnet is used as the pressing means. FIG. 4 shows an example of a circuit diagram of a wireless IC tag having a passive RFID structure used in the present invention. FIG. 4 shows an example in which a water-absorbing expansion member is used as means for pressing the switch. FIG. 5 shows an example of a circuit diagram of a wireless IC tag having a passive RFID structure used in the present invention. FIG. 5 shows an example in which a thermoelectric conversion element is used as the power generation means. FIG. 6 shows an example of a circuit diagram of a wireless IC tag having a passive RFID structure used in the present invention. FIG. 3 shows an example in which a water battery is used as the power generation means. FIG. 7 shows an example of a circuit diagram of a wireless IC tag having a semi-passive RFID structure. FIG. 8 shows an example of a circuit diagram of a wireless IC tag having a semi-passive RFID structure used in the present invention. FIG. 8 shows an example in which a switch pressing means is used as the circuit opening / closing means. FIG. 9 shows an example of a circuit diagram of a wireless IC tag having a semi-passive RFID structure used in the present invention. FIG. 9 shows an example in which a thermoelectric conversion element is used as the power generation means. FIG. 10 shows an example of a circuit diagram of a wireless IC tag having a semi-passive RFID structure used in the present invention. FIG. 10 shows an example in which a water battery is used as the power generation means. FIG. 11 shows an example of a circuit diagram of a wireless IC tag having a semi-passive RFID structure used in the present invention. FIG. 11 shows an example in which a thermoelectric conversion element is used as the power generation means and the power source portion is a separate circuit. FIG. 12 shows an example of a circuit diagram of a semi-passive RFID structure wireless IC tag used in the present invention. FIG. 12 shows an example in which a water battery is used as the power generation means and the power source portion is a separate circuit.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. The present invention is not limited to the following embodiments, but includes modifications appropriately made within the scope obvious to those skilled in the art.

  Here, the intraoral appliance includes a denture. Intraoral appliances include removable floor orthodontic appliances used to treat anterior crowding and removable activators, bainators and retention devices for improving jaw relations between the upper and lower jaws. Includes mouthpieces used for the treatment of spongers, retainers and temporomandibular disorders.

  The intraoral wearing device according to the present invention includes an RFID tag (Radio Frequency IDentification) IC tag 100. When the intraoral wearing device is mounted in the oral cavity, the IC tag 100 is disconnected from the circuit and does not transmit a radio signal. On the other hand, the IC tag 100 is connected to a circuit when the intraoral appliance is removed from the oral cavity, and can transmit a radio signal. The IC tag 100 transmits information recorded on the IC chip to the reader by a wireless signal when receiving a signal from the dedicated reader. A radio signal transmitted from the intraoral device is received by the reader. When the reader receives a wireless signal from the intraoral device, the reader analyzes the signal from the intraoral device and detects or specifies the location of the intraoral device that is the source of the signal. That is, the reader operator who perceived the wireless signal, the lamp is lit or blinking, a message or information is displayed on the display screen, etc. can be perceived by the reader operator. The location of the intraoral device can be specified by the method.

  The IC tag 100 embedded or mounted in the intraoral mounting device opens and closes the radio signal transmission circuit by, for example, a physical pressing force applied to the IC tag 100 or the intraoral temperature and moisture. Therefore, the IC tag 100 is embedded or attached to the intraoral device with an arrangement corresponding to the mechanism for opening and closing the circuit. Further, since the wireless IC tag 100 has a small occupation area and is formed in a thin sheet shape, even a thin resin portion such as a denture can be easily accommodated. As the wireless IC tag 100, for example, one having a thickness of about 0.3 mm to 2 mm is used. The wireless IC tag 100 is attached to the intraoral mounting device, for example, by being embedded in a range portion of the intraoral mounting device or by being mounted between the intraoral mounting device and the oral mucosa. Since the wireless IC tag 100 is formed into a thin sheet, it does not give a sense of incongruity to the user even if it is mounted in the oral cavity.

  Here, the circuit of the IC tag 100 has a passive type, a semi-passive type, or a structure conforming thereto. The passive IC tag 100 receives radio waves transmitted from a reader. The received radio wave is converted into an electromotive force by, for example, an antenna coil or a Schottky diode, and information in the ID chip is transmitted to the reader. Therefore, since the passive IC tag does not require a power source (for example, a battery), there is no risk that the power source contacts the mucous membrane in the oral cavity. The semi-passive IC tag receives a radio wave transmitted from a reader and activates a power source in the IC tag using this as a trigger. Then, using the power from the power source, the information in the ID chip is transmitted to the reader. The radio wave emitted from the IC tag can transmit information up to a radius of about several meters for the passive type and about 30 m for the semi-passive type.

  The circuit is opened and closed inside and outside the oral cavity by opening and closing a circuit in the IC tag 100 such as an antenna portion. That is, the signal from the reader cannot be received when the circuit is disconnected. Therefore, in such a state, the IC tag does not transmit radio waves. In addition, the IC tag cannot generate power when the circuit is disconnected. For this reason, the circuit is completely turned off. On the other hand, when the circuit of the antenna portion is connected, the IC tag can receive a signal from the reader. Therefore, in a state where the circuit is connected, the IC tag can generate power and send a signal to the reader.

  FIG. 1 shows an example of a circuit diagram of a wireless IC tag. In particular, FIG. 1 shows an example of a circuit of a passive type IC tag. An IC tag 100 shown in FIG. 1 includes an IC chip 10 that records information, an antenna 20 that wirelessly transmits information recorded on the IC chip 10, and a circuit 30 that passes current through the IC chip 10 and the antenna 20. It is out. In the IC chip 10, individual identification information of the IC tag is recorded. The individual identification information is transmitted from the antenna 20 to the reader when power is applied through the circuit 30. The antenna 20 is preferably small and highly resonant, and for example, a winding (coil), etching, plating, or printing method is used. The connection between the IC chip 10 and the antenna 20 is performed, for example, by connecting a thin and fine substrate on which the IC chip 10 is mounted to the bipolar terminals of the antenna 20.

  In FIGS. 4 to 6 described below, an example of a passive IC tag using a circuit opening / closing method physically as the circuit opening / closing means 49 is shown.

  In the IC tag 100 shown in FIG. 2, a pressing means 50 attached to the switch 40 is used as the circuit opening / closing means 40. As the pressing means 50, for example, a micro switch, a plastic piece, or a metal piece is used. The pressing means 50 does not press the switch 40 when the intraoral device is outside the oral cavity. Therefore, the switch 30 connects the circuit when the intraoral wearing device is outside the oral cavity. In a state where the circuit is closed, the IC tag 100 can transmit a radio signal to the reader via the antenna 20. On the other hand, when the intraoral mounting device is mounted in the oral cavity, the pressing means 50 presses the switch 40. Accordingly, the pressed switch 40 disconnects the circuit. As a result, the circuit is opened, and the IC tag 100 cannot transmit a radio signal. The IC tag having the physical circuit opening / closing means 40 is mounted or embedded in the mucosal surface of the intraoral device so that the pressing unit 50 presses the switch when the intraoral device is mounted in the oral cavity. .

  In the IC tag 100 shown in FIG. 3, two magnets 52 are used as the pressing means 50. One of the two magnets 52 is attached to the switch 40. The other magnet 52 is disposed at a position close to the magnet 52 attached to the switch 40 when the intraoral mounting device is mounted in the oral cavity. The two magnets 52 are arranged so as to face each other in a repulsive direction. Therefore, when the intraoral device is mounted in the oral cavity, the switch 40 is pressed by the magnetic force between the two magnets 52, and the switch 40 disconnects the circuit. On the other hand, when the intraoral wearing device is removed from the oral cavity, the distance between the two magnets increases, so that the switch 40 connects the circuit. Thus, when the circuit is opened and closed using magnetic force, since the pressing means 50 does not directly contact the switch 40, there is an advantage that waterproofing is easy.

  In the IC tag 100 shown in FIG. 4, a water absorbing / expanding member 54 is used as the pressing means 50. As the water absorbing expansion member 54, a resin whose volume expands when water is absorbed, such as nylon resin, is used. The water absorbing and expanding member 54 absorbs moisture (saliva) in the oral cavity when the intraoral mounting device is mounted in the oral cavity, and expands the volume. The water-absorbing expansion member 54 whose volume has expanded due to water absorption presses the switch 40, and the switch 40 cuts the circuit. On the other hand, when the intraoral device is removed from the oral cavity, the water absorbed by the water-absorbing expansion member 54 evaporates and the member dries. When the water absorbing expansion member 54 is dried, the volume of the water absorbing expansion member 54 is contracted, and the switch 40 is not pressed. Thereby, the switch 40 reconnects the circuit. The IC tag including the water absorbing / expanding member 54 is mounted or embedded in the intraoral mounting device so that the water absorbing / expanding member 54 comes into contact with moisture (saliva) when the intraoral mounting device is mounted in the oral cavity.

  In FIGS. 5 and 6 described below, an example of a passive IC tag using a relay as the circuit opening / closing means 49 is shown. The relay is a circuit opening / closing means composed of a power generation means, an electromagnet that changes an electrical signal into a mechanical movement, and a switch for opening and closing electricity. The passive IC tag 100 receives radio waves transmitted from the reader, converts the received radio waves into electromotive force, and transmits information in the ID chip to the reader.

  In the IC tag 100 shown in FIGS. 5 and 6, a relay is used as the circuit opening / closing means 40. The circuit opening / closing means 40 as a relay includes a switch 44 in the relay that disconnects the circuit when the power generation means 42 that generates power when the intraoral device is mounted in the oral cavity. When the power generation means 42 generates power, electric power is generated between terminals connected to the power generation means 42. The terminals are connected by, for example, a coil. A switch 44 is disposed between the terminals connected to the power generation means 42, and opens and closes the circuit in response to electromagnetic force generated between the terminals. In the example shown in FIG. 5 and FIG. 6, the case where the power generation means 42 generates electric power and electric power is generated between the terminals is shown. In this case, as shown in FIGS. 5 and 6, the switch 44 is attracted in the direction of disconnecting the circuit, and the circuit of the IC tag 100 is turned off. On the other hand, when the power generation by the power generation means 42 stops and the power between the terminals disappears, the switch 44 connects the circuit of the IC tag. As the power generation means, for example, a thermoelectric conversion element, a water battery, or a piezoelectric conversion element is used. In the example shown in FIG. 1, the circuit of the IC tag is configured by one relay, but a plurality of relays may be provided for one circuit.

  In the IC tag 100 shown in FIG. 5, a thermoelectric conversion element 46 is used as power generation means. The thermoelectric conversion element converts heat and electric power. For example, a Peltier element is used. The thermoelectric conversion element 46 includes a contact surface 46a that comes into contact with the oral mucosa when the intraoral wearing device is mounted in the oral cavity, and a non-contact surface 26b that does not come into contact with the oral mucosa. The temperature of the contact surface 46a is about 37 degrees when it comes into contact with the oral mucosa, and a temperature difference is generated between the contact surface 46a and the non-contact surface 46b that is not in contact with the mucosa. As described above, when a temperature difference occurs on the surface of the thermoelectric conversion element 46, electric power flows due to the Peltier effect, and a power generation effect is produced. Thus, since the thermoelectric conversion element 46 generates power, an electromagnetic force is generated between the two terminals connected thereto. And as shown in FIG. 5, the switch 44 arrange | positioned between terminals receives an electromagnetic force, and cut | disconnects a circuit. On the other hand, when the intraoral device is removed from the oral cavity, the temperature of the contact surface 46a and the non-contact surface 46b of the thermoelectric conversion element 46 becomes substantially the same, and thus power generation stops. Thereby, there is no electric power between the terminals connected to the thermoelectric conversion element 46, the electromagnetic force of the switch 44 is also eliminated, and the circuit of the IC tag is connected. The IC tag using the thermoelectric conversion element 46 is mounted or embedded in an intraoral wearing device so that the contact surface 46a contacts the mucous membrane in the oral cavity and the non-contact surface 46b does not contact the mucous membrane.

  In the IC tag 100 shown in FIG. 6, a water battery 48 is used as power generation means. As the water battery 48, for example, a battery in which activated carbon containing salt is inserted between magnesium and carbon is used. The water battery 48 generates power using moisture (saliva) in the oral cavity when the intraoral wearing device is mounted in the oral cavity. Thus, since the water battery 48 generates power, an electromagnetic force is generated between the two terminals connected thereto. And as shown in FIG. 3, the switch 44 arrange | positioned between terminals receives an electromagnetic force, and cut | disconnects a circuit. On the other hand, when the intraoral device is removed from the oral cavity, the water in the water battery 48 evaporates and the water battery 48 is in a dry state, so power generation is stopped. Thereby, the electromagnetic force between the terminals connected to the water battery 48 is lost, and the switch 44 connects the circuit of the IC tag. The IC tag using the water battery 48 is mounted or embedded in the intraoral device so that the water battery 48 comes into contact with moisture (saliva) when the intraoral device is mounted in the oral cavity.

  7 to 10 described below show an example of a semi-passive type IC tag using a physical opening / closing means or a relay as the circuit opening / closing means 49. The relay is a circuit opening / closing means composed of a power generation means, an electromagnet that changes an electrical signal into a mechanical movement, and a switch for opening and closing electricity. As the physical opening / closing means, for example, a pressing means 50 for pressing a switch is used. The semi-passive type IC tag 100 receives a radio wave transmitted from the reader, operates a power source in the IC tag as a trigger, uses power from the power source, Send out information. The power source in the case of FIG. 7 uses a rechargeable battery. In this case, those capable of non-contact charging using electromagnetic induction are preferable.

  FIG. 8 shows an example in which the passive IC tag shown in FIG. 2-4 is a semi-passive type. In the IC tag 100 shown in FIG. 8, the pressing means 50 is used as the circuit conversion means 40. Examples of the pressing unit 50 are a physical pressing unit, a magnet, and a water-absorbing expansion member for the oral mucosa. The pressing means 50 presses the switch 44 when the intraoral mounting device is mounted in the oral cavity. The switch 44 pressed by the pressing means 50 cuts the circuit. The IC tag 100 includes a power generation means 42 such as a thermoelectric conversion element, a water battery, and a piezoelectric conversion element, and a power source 60 such as a rechargeable battery and a capacitor. The power generation means 42 generates power using, for example, the temperature, moisture, and pressure in the oral cavity when the intraoral mounting device is mounted in the oral cavity. As the power generation means 42, a plurality of types may be provided. The electric power generated by the power generation means 42 is stored in the power source 60. The power supply 60 is also connected to the IC chip 10 and operates when receiving a signal from the reader. Then, using the power supplied from the power supply 60 to the IC chip, the individual identification information recorded in the IC chip is transmitted to the reader.

  FIG. 9 shows an example in which the passive IC tag shown in FIG. 5 is a semi-passive type. In the IC tag 100 shown in FIG. 9, a thermoelectric conversion element 46 such as a Peltier element is used as a relay power generation means. The thermoelectric conversion element 46 generates power when a temperature difference occurs between the contact surface 46 a and the non-contact surface 46 b, and generates electric power between the two terminals connected to the thermoelectric conversion element 46. The two terminals are connected by, for example, a coil. A switch 44 is disposed between the two terminals, and the switch 44 cuts the circuit by electromagnetic force. A power source 60 such as a rechargeable battery or a capacitor is connected to the two terminals that generate electromagnetic force. The power supplied from the power supply 60 is used as power for causing the switch 44 to disconnect the circuit. As described above, in the case where the power generation by only the thermoelectric conversion element 46 is insufficient, the power generation amount may be supplemented in combination with the power source 60. Further, the power generated by the power generation means 42 when the intraoral device is mounted in the oral cavity may be stored in the power source 60. On the other hand, the power source 60 is also connected to the IC chip 10. The semi-passive type IC tag having such a structure activates the power source 60 when a signal from the reader is received. Then, using the power supplied from the power source 60 to the IC chip 10, the individual identification information recorded in the IC chip 10 is transmitted to the reader.

  FIG. 10 shows an example in which the passive IC tag shown in FIG. 6 is a semi-passive type. In the IC tag 100 shown in FIG. 10, a water battery 48 is used as power generation means. The water battery 48 generates electric power using moisture (saliva) in the oral cavity and generates an electromagnetic force between two terminals connected to the thermoelectric conversion element 46. A switch 44 is disposed between the two terminals, and the switch 44 receives electromagnetic force to cut the circuit. A power source 60 such as a rechargeable battery or a capacitor is connected to the two terminals that generate electromagnetic force. The power supplied from the power supply 60 is used as auxiliary power for causing the switch 44 to disconnect the circuit. Further, the power generated by the power generation means 42 when the intraoral device is mounted in the oral cavity may be stored in the power source 60. On the other hand, the power supply 60 is also connected to the IC chip 10 and operates when receiving a signal from the reader. Then, using the power supplied from the power supply 60 to the IC chip, the individual identification information recorded in the IC chip is transmitted to the reader.

  In FIGS. 11 and 12 described below, an example of a semi-passive type IC tag using a relay as the circuit opening / closing means 49 is shown. In particular, in the examples of FIGS. 11 and 12, an example in which a power generation system for opening and closing a circuit and a power generation system for charging a power source 60 are provided as separate circuits is shown.

  FIG. 11 shows an example in which the power generation system for opening and closing the circuit and the power generation system for charging the power source 60 in the semi-passive IC tag shown in FIG. 9 are constructed as separate circuits. In the IC tag 100 shown in FIG. 11, a thermoelectric conversion element 46 such as a Peltier element is used as power generation means for opening and closing a circuit. The thermoelectric conversion element 46 generates electric power when a temperature difference occurs between the contact surface 46 a and the non-contact surface 46 b, and generates an electromagnetic force between two terminals connected to the thermoelectric conversion element 46. A switch 44 is disposed between the two terminals, and the switch 44 cuts the circuit by electromagnetic force. On the other hand, a power generation means 42 for charging the power source 60 is provided separately from the power generation means for opening and closing the circuit. The power generation means 42 is, for example, a thermoelectric conversion element, a water battery, or a piezoelectric conversion element, and generates power using temperature, moisture, or pressure in the oral cavity. As the power generation means 42, a plurality of types may be provided. The electric power generated by the power generation means 42 is stored in the power source 60. The power supply 60 is connected to the IC chip 10 and operates when receiving a signal from the reader. Then, the power supply 60 supplies the stored electric power to the IC chip 10, and the IC tag 100 transmits the individual identification information recorded on the IC chip 10 to the reader.

  FIG. 12 shows an example in which the power generation system for opening and closing the circuit and the power generation system for charging the power source 60 in the semi-passive IC tag shown in FIG. 10 are constructed as separate circuits. In the IC tag 100 shown in FIG. 12, a water battery 48 is used as power generation means for opening and closing a circuit. The water battery 48 generates electric power using moisture in the oral cavity and generates electromagnetic force between two terminals connected to the thermoelectric conversion element 46. A switch 44 is disposed between the two terminals, and the switch 44 cuts the circuit by electromagnetic force. On the other hand, a power generation means 42 for charging the power source 60 is provided separately from the power generation means for opening and closing the circuit. The power generation means 42 is, for example, a thermoelectric conversion element, a water battery, or a piezoelectric conversion element, and generates power using temperature, moisture, or pressure in the oral cavity. As the power generation means 42, a plurality of types may be provided. The electric power generated by the power generation means 42 is stored in the power source 60. The power supply 60 is connected to the IC chip 10 and operates when receiving a signal from the reader. Then, the power supply 60 supplies the stored electric power to the IC chip 10, and the IC tag 100 transmits the individual identification information recorded on the IC chip 10 to the reader.

  Here, the reader that receives radio waves transmitted from the wireless IC tag 100 included in the intraoral appliance and reads information recorded on the IC chip 10 is capable of transmitting and receiving signals to and from the IC tag 100. If it is. Examples of the reader are a portable terminal, a personal computer, and a mobile phone. Further, the position of the intraoral appliance equipped with the wireless IC tag may be displayed on the display screen of the reader. In addition, a well-known reader can be used as a reader used in the intraoral-mounted device searching system.

  A first embodiment of the present invention will be described. In Example 1, it was confirmed whether or not the wireless IC tag could be recognized when actually installed in a resin such as a denture. Main module RB-101 (Yukioka Seisakusho, 13.56MHz) as a wireless IC tag reader, RS-232C board RB-101Sub (Yukioka Seisakusho) Various antennas RA-100, 101, 102, 103, 104 (Yukioka Seisakusho) )It was used. As IC tags, film-like RT-003 (25 × 50mm, user memory size 2048bit, compliant standard ISO / IEC15693-2, sold by Yukioka Seisakusho, manufactured by Texas Instruments), coin-type RT-021 (22mmφ, user Memory size 2048bit, compliant standard ISO / IEC15693-2, sold by Yukioka Seisakusho, manufactured by Texas Instruments), film-shaped circular RT-P05 (22mmφ, user memory size 256bit, compliant standard ISO / IEC15693-2, sold by Yukioka Seisakusho , Manufactured by Texas Instruments). The IC tag used was a passive type. Most resins used in removable treatment devices installed in the oral cavity, such as dentures, are PMMA-based. Therefore, a wireless IC tag was sandwiched between PMMA plates with a thickness of about 2 mm, and then it was examined whether the reader could recognize the IC tag. The results are shown in Table 1.

  As can be seen from Table 1, even if the IC tag is sandwiched between PMMA plates, the reader can read the information and can also write and rewrite the information.

  Next, a second embodiment of the present invention will be described. In Example 2, a part of the circuit of the film-like IC tag RT-003 is cut, and a micro switch AM50642C3F (manufactured by Matsushita Electric Works Co., Ltd.) is inserted into that part. When the switch is turned ON / OFF, it is sandwiched between PMMA. We investigated whether the IC tag was recognized by the reader. As a result of building a circuit that does not generate radio waves in the oral cavity and recognizes the device when the patient removes the device, the reader recognizes the IC tag if the micro switch is not pressed, and when the micro switch is pressed I couldn't recognize it. As a method for turning on / off the microswitch, there are a method of directly contacting an oral mucosa and a tissue such as a tooth and a method of not contacting the same. Therefore, as an indirect method, it was investigated whether switching with a water absorbent resin is possible. As a result, it was found that switching was possible. Tables 2 and 3 show the volume change results and switching results of the water-absorbing expandable resin. This means that the device is recognized when the patient removes the device without generating radio waves in the oral cavity.

  Next, a third embodiment of the present invention will be described. In Example 3, it is assumed that a part of the circuit of the film-like IC tag RT-003 is cut, no radio waves are generated in the oral cavity, and the device is recognized when the patient removes the device (3V A small relay Y14H-1C-3DS, contact capacity 1A, manufactured by Hsinda precision) is incorporated into the circuit, and a dry cell (AA, 1.5V) is used to check whether switching is possible with a Peltier element or a water battery. The effectiveness of the relay was investigated. The results are shown in Table 4.

  As can be seen from Table 4, when the relay is energized, the reader did not recognize the IC tag and recognized that it was energized. This means that the IC tag does not generate radio waves when generating electricity in the oral cavity with Peltier elements, water batteries, piezoelectric elements, etc., and recognizes the device when the patient removes the device. .

  INDUSTRIAL APPLICABILITY The present invention can be used as an intraoral wearing device that can transmit information by wireless signals. In addition, the present invention can be used as an intraoral-mounted device search system that specifies the location of the removed intraoral-mounted device using a reader. Therefore, for example, the present invention can be suitably used in the field of care for elderly people such as care facilities and nursing homes, and in dental clinics that perform orthodontic treatment for dentition.

DESCRIPTION OF SYMBOLS 10 IC chip 20 Antenna 30 Circuit 40 Circuit opening / closing means 42 Electric power generation means 44 Switch 46 Thermoelectric conversion element 46a Contact surface 46b to the oral mucosa Non-contact surface 48 Water battery 50 Press means 52 Magnet 54 Water absorption expansion member 60 Power supply 100 Radio frequency IC tag

Claims (9)

An intraoral wearing device comprising a wireless IC tag including an IC chip for recording information and an antenna for wirelessly transmitting information recorded on the IC chip,
The wireless IC tag is equipped with the wireless IC tag, wherein the wireless IC tag stops / starts transmission of information from the IC chip via the antenna when the oral IC is mounted / not mounted. Instruments. The wireless IC tag includes a circuit that electrically connects the IC chip and the antenna,
2. An intraoral wearing comprising a wireless IC tag according to claim 1, further comprising circuit opening and closing means for disconnecting the circuit when triggered by intraoral wearing and connecting the circuit when triggered by non-oral wearing. Instruments. The wireless IC tag includes a power generation means for generating power in response to wearing in the oral cavity,
The wireless circuit according to claim 2, wherein the circuit opening / closing means includes switching means for controlling energization to the circuit or the power generation means, and controls the switching means in response to power generation by the power generation means. An intraoral device equipped with an IC tag.   The wireless power generator according to claim 3, wherein the power generation means is a thermoelectric conversion element that generates power by a temperature difference caused by contact / non-contact of the oral mucosa in the oral cavity or a water battery that generates power by moisture in the oral cavity. An intraoral device equipped with an IC tag. The circuit opening / closing means has a pressing means that is pressed when the mouth is worn.
The intraoral wearing device provided with the wireless IC tag according to claim 2, wherein the circuit is cut in a pressed state of the pressing means, and the circuit is connected in a separated state of the pressing means.   6. The intraoral wearing device having a wireless IC tag according to claim 5, wherein the pressing means is a magnet pressed by magnetic force or a water absorbing member that expands and contracts by moisture in the oral cavity. An intraoral wearing device comprising the wireless IC tag according to claim 1;
A reader that receives radio waves transmitted by the wireless IC tag and reads information recorded in the IC chip;
Intraoral appliance search system including   The wireless IC tag is a passive IC tag that receives a radio wave transmitted from the reader and transmits the information recorded in the IC chip to the reader using the received radio wave as an electromotive force. The intraoral-equipped device searching system according to claim 7.   The wireless IC tag receives a radio wave transmitted from the reader, operates a built-in power source when the radio wave is received, and records information recorded on the IC chip to the reader. 10. The intraoral-mounted device searching system according to claim 9, which is a semi-passive type IC tag that transmits.

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