JP5619441B2 - Treatment device - Google Patents

Description

  The present invention relates to a technique for dental treatment, and more particularly to a technique for performing high-frequency treatment.

  Conventionally, in dental treatment, a treatment method using high frequency (high frequency treatment) is known. High-frequency treatment is considered as one of the treatment methods having many advantages in dental treatment such as hemostatic effect and bactericidal effect, and several treatment devices for performing high-frequency treatment have been proposed so far.

  For example, Patent Document 1 discloses a high-frequency treatment device (tooth deactivation device) that outputs a high-frequency pulse to an electrode. Further, Patent Document 2 proposes a technique for adding other functions to the high-frequency treatment device itself. Specifically, a high-frequency treatment device (sterilization disinfection device) including a root canal length measuring device is disclosed. ing.

Special Table 2000-515398 International Publication No. 2008/114244 Pamphlet

  By the way, the conventional high frequency treatment device is limited to a configuration having only a high frequency output function as in Patent Document 1 or a configuration having both a high frequency output function and a root canal length measurement function as in Patent Document 2. ing. Therefore, the operator has to switch from a different treatment device to a high-frequency treatment device while performing other treatments different from the high-frequency treatment, or when performing high-frequency treatment after the treatment. there were.

  For example, when performing high-frequency treatment after root canal enlargement (cutting processing), it is necessary to position the electrode at an appropriate position. Therefore, if the treatment device is changed, it is difficult to accurately perform the high frequency treatment. Therefore, a technique that enables a smooth transition to high frequency therapy is desired.

  The present invention has been made in view of the above problems, and aims to provide a technique capable of smoothly transitioning from non-high-frequency treatment to high-frequency treatment while maintaining an optimal position without changing the treatment device. To do.

In order to solve the above-described problems, a first aspect includes a high-frequency signal generation circuit that generates a therapeutic high frequency, a root canal treatment tool that is used for non-high-frequency treatment that does not use the therapeutic high frequency, and a root canal length. A root canal length measurement circuit for generating a root canal length measurement signal for measurement, and the therapeutic high frequency is conducted to the affected part through the root canal treatment tool, and the root canal treatment tool includes the root canal length measuring signal is rendered conductive, the root canal length measuring circuit, at least when the therapeutic frequency is conducted to the root canal treatment tool, and electrically isolated Ru therapy device from the high frequency signal generating circuit Is.

  In the second aspect, in the treatment device according to the first aspect, the non-high frequency treatment is a treatment accompanied by a mechanical operation.

Moreover, the 3rd aspect WHEREIN: The treatment part which concerns on the 1st or 2nd aspect WHEREIN: The holding part for an operator to hold | grip, The insulating member which electrically insulates the said holding part and the said root canal treatment tool, Is further provided.

According to a fourth aspect, in the treatment device according to any one of the first to third aspects, an output switch for outputting the therapeutic high frequency from the high frequency signal generation circuit is further provided.

According to the treatment device from the first to the fourth aspects, the high-frequency treatment and the non-high-frequency treatment can be performed with the same treatment device. Therefore, the operator can omit the operation of switching from the root canal treatment device for non-high-frequency treatment to the treatment device for high-frequency treatment while treating the affected part, so that the treatment can be performed more smoothly. In addition, it is possible to achieve an excellent effect of shifting to high frequency therapy while maintaining the optimal position reached during non-high frequency therapy.
Further, root canal length measurement and high-frequency treatment can be performed with the same treatment device. Therefore, it is possible to achieve an excellent effect that high-frequency treatment can be performed at an appropriate position at an appropriate timing.
Further, at least while the high frequency signal is conducted, the high frequency signal can be prevented from being transmitted to the root canal length measurement circuit. Therefore, it is possible to obtain an excellent effect that the root canal length measurement circuit can be prevented from being broken by the high-frequency signal.

  In particular, according to the treatment device according to the second aspect, it is possible to achieve an excellent effect that the treatment accompanied by the mechanical operation and the high frequency treatment can be performed with the same treatment device. The term “procedure with mechanical movement” as used herein refers to a procedure in which the user grips and moves the treatment tool with fingers, scaling by vibrating the tip with an ultrasonic transducer, or piston with an electric motor. This refers to a procedure involving displacement of at least one of fingers, tools, and materials in the tool, such as root canal filling that is driven and injected into the root canal by moving the filler.

  In particular, according to the treatment device according to the third aspect, the grip portion and the treatment tool are electrically insulated by the insulating member, so that the operator can safely perform high-frequency treatment. Can be played.

  In particular, according to the treatment device according to the fourth aspect, by providing an output switch that outputs a high-frequency signal, it is possible to achieve an excellent effect that switching of the output of the high-frequency signal can be easily realized.

It is an external appearance perspective view which shows the root canal enlargement handpiece which concerns on 1st Embodiment. It is a block diagram which shows the internal structure of the handpiece for root canal expansion. It is an external appearance perspective view which shows the ultrasonic scaler which concerns on 2nd Embodiment. It is a block diagram which shows the internal structure of an ultrasonic scaler. It is an external view which shows the root canal treatment device which concerns on 3rd Embodiment. It is a block diagram which shows the internal structure of a high frequency output module and a root canal length measurement module. It is an external view which shows the treatment device which concerns on 4th Embodiment. It is a block diagram which shows the internal structure of a high frequency output module and a root canal length measurement module.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings. However, the constituent elements described in this embodiment are merely examples, and are not intended to limit the scope of the present invention only to them.

{About therapeutic high frequency}
Each of the treatment devices shown in the following examples is equipped with a treatment tool with high conductivity that is used for treatment without high-frequency treatment (non-high-frequency treatment), and the treatment high-frequency is conducted to this treatment tool. It has the composition to make it. That is, by using the present invention, a treatment device that is not planned to be used for high-frequency treatment can be applied to high-frequency treatment.

  Here, the high frequency signal for treatment used for dental treatment is, for example, a frequency of 500 to 1000 kHz, a voltage of 140 V (effective value 100 V · rms), and a current of 200 mA · rms. By applying such a high-frequency signal to the affected area, it is said that effects such as coagulation, cauterization, hemostasis, pain relief, disinfection and the like of the affected area can be expected, and it is basically said that healing of the affected area is accelerated.

  In particular, by applying a high-frequency signal output to the affected area before and after treatment, the treatment site can be sterilized. Therefore, if this high-frequency treatment function can be combined with various treatment devices, high-frequency treatment can be easily performed, and the effect of high-frequency treatment can be expected immediately after treatment. Furthermore, by using the treatment tool used for non-high-frequency treatment as an electrode for conducting high-frequency signals, there is no need to replace the treatment instrument, and the transition between non-high-frequency treatment and high-frequency treatment is smooth. Since it can be carried out, it can be expected that efficient treatment can be realized. Moreover, it can be expected that a particularly effective treatment can be realized by shifting to the high frequency treatment while maintaining the optimum position reached in the non-high frequency treatment.

<1. First Embodiment>
FIG. 1 is an external perspective view showing a root canal enlargement handpiece 10 according to the first embodiment. FIG. 2 is a block diagram showing an internal configuration of the root canal enlargement handpiece 10. In FIG. 2 and subsequent figures, general-purpose parts such as a power source are not shown.

  As shown in FIG. 1, the root canal enlargement handpiece 10 includes a file 11 (treatment tool) and a file holder 12, and drives the file 11 attached to the tip of the file holder 12 to drive the teeth 900. A treatment device for enlarging the root canal 901 is formed by a mechanical action of cutting.

  The file holder 12 is formed by a substantially rod-shaped housing 13. As shown in FIG. 1, a display unit 14, a setting operation unit 15, and a drive operation unit 16 are provided on the outer peripheral portion of the housing 13. As shown in FIG. 2, the housing 13 includes a motor 17, a motor drive circuit 18, a high-frequency signal generation circuit 19, a root canal length measurement circuit 20, a switch switching circuit 21, and switches SW <b> 1 to SW <b> 3. Is provided. The root canal enlargement handpiece 10 includes a passive electrode 22 extending from the inside of the housing 13 to the outside.

  The setting operation unit 15 is a setting button provided for setting the operation of the root canal enlargement handpiece 10. The setting operation unit 15 is configured to be able to set the driving conditions (rotation speed, torque value, etc.) of the file 11 and the motor 17, the output conditions (frequency, output time, etc.) of the high frequency signal, and the like.

  The drive operation unit 16 is an output switch provided to perform an on / off operation of driving the motor 17 and an output operation of a high frequency output, and includes an operation button that can be pressed. The switch SW1 is provided to switch the electrical connection between the drive operation unit 16 and the motor drive circuit 18 or the high-frequency signal generation circuit 19. Switching of the connection in the switch SW1 is performed by a switch switching circuit 21 that operates based on input information from the setting operation unit 15.

  In the switch SW1, when the drive operation unit 16 and the motor drive circuit 18 are connected, the drive operation unit 16 controls the motor drive circuit 18. That is, the motor drive circuit 18 is operated by an input from the drive operation unit 16 as a trigger. Further, in the switch SW 1, when the drive operation unit 16 is connected to the high-frequency signal generation circuit 19, the drive operation unit 16 controls the high-frequency output from the high-frequency signal generation circuit 19. Thus, the switch SW1 constitutes a switch for switching the operation mode (file rotation drive mode and high-frequency output mode) of the root canal enlargement handpiece 10.

  As shown in FIG. 1, the setting operation unit 15 of the root canal enlargement handpiece 10 according to the present embodiment includes a plurality of buttons. The operation mode selector switch SW1 is controlled by any one of the plurality of buttons. For this reason, the operator can smoothly shift to the high-frequency treatment only by operating the predetermined button of the setting operation unit 15 without changing the root canal enlargement handpiece 10 to another treatment device. Therefore, high frequency treatment can be performed efficiently. In addition, as will be described later, in the file rotation drive mode by the motor, it is possible to know how far the tip position of the file 11 is from the apex by the action of the root canal length measurement circuit 20. Therefore, according to the root canal enlargement handpiece 10 according to the present embodiment, the operator should perform cutting enlargement of the root canal 901 while confirming the tip position of the file 11 in the file rotation drive mode, and shift to high-frequency treatment. It is possible to switch from the file rotation drive mode to the high frequency output mode at the position considered, and to continue the high frequency treatment without changing the treatment device, that is, while maintaining the optimum position.

  The switch SW2 is provided to switch the electrical connection between the file 11 and the high-frequency signal generation circuit 19 or the root canal length measurement circuit 20. The switch SW3 is provided to switch the electrical connection between the passive electrode 22 and the high-frequency signal generation circuit 19 or the root canal length measurement circuit 20.

  The high frequency signal generation circuit 19 generates a high frequency voltage in the range of, for example, 500 to 1000 kHz between the file 11 and the passive electrode 22. The frequency of the high-frequency signal output from the high-frequency signal generation circuit 19 is set by operating the setting operation unit 15. When conducting a high-frequency signal to the affected area, the tip of the file 11 is applied to the affected area, for example, a tissue near the apex 903, and the passive electrode 22 is applied to a part of the patient's body such as the gum 902 or the lips. .

  In this embodiment, in order to electrically connect the lead wire extending from the switch SW2 to the file 11, the conductive member 23 exposed to the outside of the housing 13 is provided. Thereby, the file 11 and the root canal length measuring circuit 20 or the high-frequency signal generating circuit 19 are electrically connected. Since the conductive member 23 is detachable with respect to the file 11, it is possible to select a secured state and a released state of electrical continuity by an operator's operation. Here, the file 11 (or reamer) used may have a shank portion formed of an insulating material. In this case, in order to transmit a high-frequency signal or a root canal measurement signal to the metal blade, for example, an electrode structure disclosed in Japanese Utility Model Laid-Open No. 05-21920 can be used. That is, the conductive member 23 may be provided inside the insulating material. While suppressing the conductive member 23 from interfering with the operability of the root canal enlargement handpiece 10, the electrical signal can be transmitted to the file 11 satisfactorily.

  Further, it is not hindered to connect the file 11 and the switch SW2 by using a member (gear or the like) that connects the motor 17 and the file 11 as a conductive material instead of the conductive member 23. In this case, since the conductive member 23 can be omitted, the root canal enlargement handpiece 10 can be configured compactly.

  The root canal length measurement circuit 20 measures the root canal length by outputting a root canal length measurement signal. Specifically, by applying voltages of two different frequencies between the file 11 and the passive electrode 22, the values of the respective impedances are obtained, and the two values (actually the voltages corresponding to the impedance values). The position of the root apex 903 is specified from the difference or ratio of the current value. In addition, the measuring method of root canal length measurement is not restricted to such a thing, It is possible to utilize various techniques including the measuring method proposed conventionally. In measuring the root canal length, the passive electrode 22 is applied to a part of the patient's body such as the gingiva 902 or the lips.

  Switching of the connections in the switches SW2 and SW3 is realized by a switch switching circuit 21 that operates based on input information from the setting operation unit 15. Specifically, when outputting a high frequency signal, the switches SW2 and SW3 are controlled so that the file 11 and the passive electrode 22 are connected to the high frequency signal generation circuit 19. When outputting a root canal length measurement signal, the switches SW2 and SW3 are switched so that the file 11 and the passive electrode 22 are connected to the root canal length measurement circuit 20. In the present embodiment, switching of connection destinations in the switches SW2 and SW3 occurs in conjunction with an operation mode change input via the setting operation unit 15.

  In the present embodiment, the high frequency signal generation circuit 19 and the root canal length measurement circuit 20 are electrically separated by the switches SW2 and SW3. Therefore, while the high-frequency signal is output to the file 11, the root canal length measurement circuit 19 is disconnected by the switches SW2 and SW3. Therefore, it is possible to suppress the high-frequency signal from being conducted to the root canal length measuring circuit 19 and to prevent the root canal length measuring circuit 19 from being damaged by the high-frequency signal.

  The display unit 14 is attached to the outer peripheral portion of the grip portion of the root canal enlargement handpiece 10 and is configured by, for example, a liquid crystal display. The display unit 14 may be composed of an organic EL display, electronic paper, a light emitting diode, or the like.

  Information indicating the state of the root canal enlargement handpiece 10 is displayed on the display unit 14. Specifically, the display unit 14 is connected to the motor drive circuit 18, the high-frequency signal generation circuit 19, and the root canal length measurement circuit 20, and displays various information obtained from these elements.

  More specifically, the drive information of the motor 17 is transmitted from the motor drive circuit 18, and the setting value and current value of the rotation speed of the file 11, the setting value and current value of the torque, and the remaining battery level of the battery (not shown). Etc. are displayed on the display unit 14. Further, the high frequency signal generation circuit 19 transmits information about the high frequency signal. For example, the presence / absence of the output of the high frequency signal, the output frequency, the output time (time for continuously outputting the high frequency signal at a time), etc. Is displayed. Furthermore, information regarding the root canal length is transmitted from the root canal length measurement circuit 20, and for example, a screen showing the position information of the apex 903, the position of the tip of the file 11 when the apex 903 is used as a reference, and the like is displayed on the display unit. 14 is displayed. Furthermore, the display unit 14 may display that the operation mode has been switched from the file rotation drive mode to the high frequency output mode or vice versa. Each of the above information may be displayed individually, or only necessary information may be switched and displayed according to the operation mode.

  In this embodiment, since the output time of the high-frequency signal is set in advance, the output of the high-frequency signal automatically stops after the set output time has elapsed since the operator pressed the operation button of the drive operation unit 16. Is configured to do. However, it is not prevented that the high-frequency signal is output only while the operator presses the operation button of the drive operation unit 16.

  Further, when the tip of the file 11 approaches or reaches the apex 903 or when it slightly passes through the apex 903, a warning may be displayed on the display unit 14, or a warning sound or the like may be displayed. It can also be configured to output. By providing such a function, excessive damage to the tissue around the apex can be reduced, and it can be used as a guideline for switching to the high frequency output mode and shifting to the high frequency treatment.

  In addition, it is also possible to provide a part or all of the functions of the setting operation unit 15 and the drive operation unit 16 by configuring the display unit 14 with a touch panel. In this case, operation means such as the setting operation unit 15 can be omitted as appropriate.

  The file 11 attached to the root canal enlargement handpiece 10 according to the present embodiment is used for cutting the internal root canal wall of the tooth 900, and mechanically acts on the affected part mechanically. It is a treatment tool used in the case of. By making it possible to give a high-frequency signal to the affected area via the file 11, when a root canal enlargement treatment is performed with the root canal enlargement handpiece 10, it is possible to immediately perform high-frequency therapy on the affected area. It becomes. That is, high-frequency treatment can be performed at an appropriate position at an appropriate timing.

  In particular, when sterilization treatment using a high-frequency signal is performed after cutting treatment such as root canal enlargement, the high-frequency treatment can be performed as it is without changing the treatment device at the position where the root canal enlargement is performed. Therefore, it is possible to secure an optimal position where high frequency treatment should be performed, and thus it can be expected that the therapeutic effect is enhanced.

<2. Second Embodiment>
The treatment device according to the first embodiment is a treatment device having a root canal enlargement function, but the treatment device of the present invention is not limited to such a treatment device.

  FIG. 3 is an external perspective view showing an ultrasonic scaler 10A according to the second embodiment. FIG. 4 is a block diagram showing the internal configuration of the ultrasonic scaler 10A. In the following description, elements having the same functions as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  The ultrasonic scaler 10 </ b> A according to the present embodiment includes a scaler main body 31 and a scaler handpiece 33. The ultrasonic scaler 10 </ b> A ultrasonically drives a scaling tool 11 </ b> A (treatment tool) such as a file or a reamer attached to the tip of the scaler handpiece 33 with an ultrasonic vibrator, and mechanically acts on the tooth surface or root. It is configured to perform treatment (ultrasonic treatment) such as polishing the inside of the tube. Although not shown, the scaler handpiece 33 includes a water injection mechanism that supplies mist-like water in the vicinity of the scaling tool 11A during ultrasonic treatment, an illumination mechanism that illuminates the vicinity of the scaling tool 11A, and the like. It may be provided.

  As shown in FIG. 3, the scaler main body 31 includes a display unit 14A, an operation setting unit 15A, and a drive operation unit 16A. Further, as shown in FIG. 4, the scaler main body 31 includes a scaler drive circuit 311, a high-frequency signal generation circuit 19, a root canal length measurement circuit 20, and switches SW2 and SW3.

  The drive operation unit 16 </ b> A is configured as a foot switch operated with a foot, and includes functions of a scaler drive switch 161 </ b> A connected to the scaler drive circuit 311 and a high-frequency output switch 162 </ b> A connected to the high-frequency signal generation circuit 19. Yes. In the present embodiment, by setting the operation of the drive operation unit 16A via the setting operation unit 15A, the drive operation unit 16A functions as one of the scaler drive switch 161A and the high-frequency output switch 162A.

  The scaler drive circuit 311 is connected to an ultrasonic transducer 331 built in the scaler handpiece 33. When the scaler drive switch 161A is operated, the scaler drive circuit 311 is controlled to turn on / off the ultrasonic output. Be controlled.

  The high frequency signal generation circuit 19 is connected to the scaling tool 11A, which is a treatment tool, via a switch SW2. In the present embodiment, a high frequency voltage is generated between the scaling tool 11 </ b> A and the passive electrode 22. The switching of the switches SW2 and SW3 is configured to occur in conjunction with the on / off of the high frequency output switch 162A. That is, the scaling tool 11A and the passive electrode 22 are connected to the high-frequency signal generation circuit 19 when the high-frequency output switch 162A is on, and are connected to the root canal length measurement circuit 20 when the high-frequency output switch 162A is off. It is comprised so that.

  As shown in the first embodiment, the switches SW2 and SW3 may be controlled by a switch switching circuit. In this case, the operation of the switch switching circuit may be controlled via the setting operation unit 15A.

  Information indicating various states of the ultrasonic scaler 10A is displayed on the display unit 14A. Specifically, the intensity of the ultrasound, the mode information of the ultrasound usage target (for example, root canal, periodontal, tooth surface, etc.), the on / off information of water injection, the on / off information of the illumination light, and the like are displayed. The display unit 14A displays the presence / absence of high-frequency output, the frequency of the high-frequency signal, the output time, and the like. Furthermore, information indicating the tip position of the scaling tool 11A and the apex position is displayed on the display unit 14A based on the result of the root canal length measurement. Further, as shown in the first embodiment, it may be displayed that the scaling mode is switched to the high frequency therapy mode or vice versa.

  According to the ultrasonic scaler 10A according to the present embodiment, any one of the plurality of buttons constituting the setting operation unit 15A causes the drive operation unit 16A to function as either the scaler drive switch 161A or the high-frequency output switch 162A. By setting the changeover switch, it is possible to smoothly shift from the ultrasonic treatment to the high frequency treatment without changing the treatment device.

<3. Third Embodiment>
FIG. 5 is an external view showing a root canal treatment device 10B according to the third embodiment. FIG. 6 is a block diagram showing the internal configuration of the high-frequency output module 50 and the root canal length measurement module 60.

  The treatment device (root canal treatment device 10B) according to the present embodiment has the other end of the root canal treatment tool holder 40 in which a root canal treatment tool 11B such as a file or a reamer is attached to one end (head portion 40a). The file holder 12B is connected to the section. The file holder 12B is connected to a high frequency output module 50 for outputting a high frequency signal and a root canal length measurement module 60 for measuring a root canal length.

  The root canal treatment tool holder 40 has a grasping portion 41 for an operator to grasp by hand, and a root canal treatment (for example, mechanical polishing such as polishing in the root canal or removal of tartar) is performed by the root canal treatment tool 11B at the tip. Cleaning, application of medicine, etc.). The other end of the root canal treatment tool holder 40 is connected to a file holder 12 provided in a general root canal length measuring device.

  The high-frequency output module 50 and the root canal length measurement module 60 are so-called functional modules, and each has a unique function. By being connected to each other, for example, a display unit 14B and a setting operation unit 15B which will be described later are provided. It can be used as one device shared by both modules. In the present embodiment, for example, a technique for connecting a functional module having a specific function (here, a high-frequency output function) to the root canal length measurement module 60 as disclosed in Japanese Patent Application Laid-Open No. 2008-246202. Can be used.

  The file holder 12 </ b> B and the root canal treatment tool 11 </ b> B are electrically connected by a lead wire (not shown) disposed inside the grip portion 41. And the insulating members 42 and 42 are attached to the both ends of the outer peripheral part of the holding part 41, respectively. By providing the insulating member 42 in this manner, the root canal treatment instrument 11B and the grasping portion 41 are electrically insulated. Therefore, when the root canal length measurement signal or the high frequency output signal is conducted to the root canal treatment tool 11B, the operator can safely perform the high frequency treatment because it is configured so that electricity does not flow to the grasping portion 41. .

  The file holder 12B is an element that is usually provided as an accessory for a general root canal length measuring instrument used for root canal length measurement. Usually, a root canal treatment tool 11B such as a file is directly attached to the attachment portion 121 at the tip of the file holder 12B, and a root canal length measurement signal is conducted to the root canal treatment tool 11B, thereby causing the root canal length. Measurement is performed. In this case, the operator grasps the file holder 12B or the like and moves the root canal treatment tool 11B. However, depending on the position of the affected part, the operation may be very difficult.

  On the other hand, in this embodiment, the file holder 12B is connected to the root canal treatment tool holder 40, and the root canal treatment tool 11B is attached to the root canal treatment tool holder 40. Thereby, while being able to perform the root canal treatment using the root canal treatment tool 11B satisfactorily, the treatment device of the present embodiment can perform root canal length measurement and high frequency treatment with the same instrument. It is configured. Moreover, since the file holder 12B is inevitably a part for an operator who has a root canal length measuring instrument, in this embodiment, the operator can easily perform high-frequency treatment without purchasing a new part. Can be equipped with equipment to do.

  The root canal length measurement module 60 includes a display unit 14B, a setting operation unit 15B, and a root canal length measurement circuit 20B. The high-frequency output module 50 includes a drive operation unit 16B, a timer 51, a high-frequency signal generation circuit 19B, and switches SW2B and SW3B. The root canal length measurement circuit 20B and the high-frequency signal generation circuit 19 are connected to the root canal treatment tool 11B and the passive electrode 22 via switches SW2B and SW3B, respectively.

  The drive operation unit 16 </ b> B is composed of, for example, a foot switch and is connected to the timer 51 of the high frequency output module 50. The timer 51 is connected to the switches SW2B and SW3B, and when there is an input from the drive operation unit 16B, the root canal treatment tool 11B and the passive electrode 22 are connected to the high-frequency signal generation circuit 19B for a preset time. The switches SW2B and SW3B are controlled so as to be connected to each other. Thereby, a high frequency voltage is applied between the root canal treatment tool 11B and the passive electrode 22 for a certain period of time. When a certain time elapses, the timer 51 controls the switches SW2B and SW3B so as to connect the root canal treatment tool 11B and the passive electrode 22 to the root canal length measurement circuit 20B.

  A line connecting the root canal length measurement circuit 20B and the high-frequency signal generation circuit 19B is a mutual communication line. From the root canal length measurement module 60 to the high frequency output module 50, the setting information input by the setting operation unit 15B is transmitted. The high frequency output module 50 is configured to switch the high frequency signal generation time, the output magnitude, and the like based on this setting information. In addition, from the high frequency output module 50 to the root canal length measurement module 60, operation information of the high frequency output module 50 (high frequency signal generation time, output magnitude, on / off state, error information, buzzer volume, battery remaining amount, etc.) The root canal length measurement module 60 displays them on the display unit 14B. The operator can operate the setting with the switches of the setting operation unit 15B while looking at the display unit 14B of the root canal length measurement module 60.

  According to the root canal treatment device 10B having the above-described configuration, the operator can appropriately perform root canal treatment while confirming the position of the distal end of the treatment tool 11B with respect to the apex by measuring the root canal length. Without replacing the tube treatment tool 11B or the root canal treatment tool holder 40, it is possible to perform high-frequency treatment simply by operating the drive operation unit 16B. Further, since the root canal treatment tool 11B, the root canal treatment tool holder 40, the file holder 12B, etc. used in the conventional dental treatment can be diverted and used relatively easily for high frequency treatment, it is excellent at low cost. A therapeutic effect can be expected.

<4. Fourth Embodiment>
FIG. 7 is an external view showing a treatment device 10C according to the fourth embodiment. FIG. 8 is a block diagram showing the internal configuration of the high-frequency output module 50 and the root canal length measurement module 60.

  In the treatment device 10C of this embodiment, the high-frequency output module 50 and the root canal length measurement module 60 shown in the third embodiment are connected to an instrument 70 that is integrally provided with a probe tool 11C that is a treatment tool. Has been configured.

  The probe tool 11C is a treatment tool for specifying the position and the like of the apex 903 based on the tactile sensation transmitted to the fingertip and the like while the operator mechanically moves the tip in the vicinity of the apex 903. The probe tool 11C is also used for measuring the depth of the periodontal pocket. Therefore, a scale is engraved on the outer peripheral portion of the probe tool 11C.

  The instrument 70 is a handpiece formed in a substantially bar shape, and a probe tool 11C is attached to the tip thereof. A connecting portion 71 for connecting to the high-frequency output module 50 and the root canal length measuring module 60 is provided at the rear portion of the instrument 70. In the instrument 70, the high-frequency output module 50, the root canal length measurement module 60, and the probe tool 11C are electrically connected via a lead wire (not shown) or the like. Therefore, in this embodiment, the instrument 70 functions as an electrode that conducts an electrical signal or a high-frequency signal for measuring the root canal length to the affected part.

  Also in the treatment device 10C of the present embodiment, by conducting a high-frequency signal to the probe tool 11C during or after treatment using the probe tool 11C as in the above embodiment, Can perform high frequency treatment smoothly. Further, by reading the scale on the probe tool, it is possible to output a high frequency signal at an appropriate position.

  The instrument 70 according to the present embodiment can be used as a single-use instrument without being connected to the high-frequency output module 50 or the root canal length measurement module 60. In this instrument 70, a grip portion is often formed of resin so that an operator can easily grip it. In this case, the short needle tool 11C and the grip portion are inevitably electrically insulated. Since such a highly versatile instrument can be diverted to the treatment device 10C relatively easily, a treatment device capable of performing high-frequency treatment at low cost can be realized.

<5. Modification>
Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made.

  Further, the treatment tool of the present invention is not limited to the treatment tool that moves by motor drive, the treatment tool that moves by ultrasonic drive, and the treatment tool that moves by finger as described in the above embodiment. For example, when using a tube or hollow needle that supplies a material such as a photopolymerization agent or a disinfectant into the root canal as a treatment tool, a high-frequency signal is transmitted to the treatment tool. It is not impeded that it can be configured. In addition, the treatment with a mechanical operation is not limited to the treatment tool itself that is displaced and acts on the affected part, but also includes the treatment tool that does not move and involves only the movement of the drug solution. Note that the root canal length measurement using the root canal length measurement circuit 20 or the like does not intentionally displace the treatment instrument or the drug solution or the like in the treatment instrument at least during the measurement. In this sense, therefore, root canal length measurement is different from a procedure involving mechanical movement.

  In addition, some of the functional blocks shown in the above embodiments are configured by dedicated circuits, but some or all of these dedicated circuits are operated in software by the CPU operating according to a program. You may comprise so that it may implement | achieve.

  Further, it goes without saying that the configurations described in the above embodiments and modifications can be omitted as appropriate or combined with each other as long as no contradiction occurs.

10 Root canal enlargement handpiece (treatment device)
10A Ultrasonic scaler (treatment device)
10B Root canal treatment device (treatment device)
10C treatment device 11 file (treatment tool)
11A Scaling tool (treatment tool)
11B Root canal treatment tool (treatment tool)
11C Probe tool (treatment tool)
15, 15A, 15B Setting operation section 16, 16A, 16B Drive operation section (output switch)
DESCRIPTION OF SYMBOLS 19, 19B High frequency signal generation circuit 20, 20B Root canal length measurement circuit 21 Switch switching circuit 23 Conductive member 31 Scaler main-body part 311 Scaler drive circuit 33 Scaler handpiece 40 Root canal treatment tool holder 41 Grasping part 42 Insulating member 50 High frequency output module 60 Root canal length measurement module 70 Instrument SW1, SW2, SW2B, SW3, SW3B switch

Claims (4)

A treatment device,
A high frequency signal generating circuit for generating a therapeutic high frequency;
A root canal treatment tool used for non-high frequency treatment without using the therapeutic high frequency;
A root canal length measurement circuit for generating a root canal length measurement signal for measuring the root canal length;
With
The therapeutic high frequency is conducted to the affected area through the root canal treatment tool ,
The root canal treatment tool is electrically connected to the root canal length measurement signal,
The root canal length measuring circuit, at least when the therapeutic frequency is conducted to the root canal treatment tool, the treatment instrument the Ru is electrically isolated from the high-frequency signal generator. The treatment device according to claim 1, wherein
A treatment device in which the non-high-frequency treatment is a treatment involving mechanical movement. The treatment device according to claim 1 or 2,
A gripping part for the operator to grip;
An insulating member for electrically insulating the grip portion and the root canal treatment tool;
A treatment device further comprising: The treatment device according to any one of claims 1 to 3,
An output switch for outputting the therapeutic high frequency from the high frequency signal generating circuit;
A treatment device further comprising:

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