Dental root canal length measuring instrument based on Android system APP

Abstract

The utility model relates to the technical field of root canal length measurement, in particular to a dental root canal length measuring instrument based on an Android system APP, which comprises a lip hook and a root canal file and further comprises a signal collector, and a measuring line group is connected between the signal collector and the lip hook and between the signal collector and the root canal file. The signal collector comprises an Android interface, a two-way operational amplifier, a data memory and an audio decoding chip, the Android interface is electrically connected with an Android APP, the Android APP comprises a waveform generation module and a data calculation module, the waveform generation module generates sine wave signals, and the audio decoding chip performs digital-to-analog conversion of waveform signals between the Android APP and the end part of the root canal file. The Android APP is connected with the signal collector through the measuring line set, the waveform generation module sends a waveform to the root canal file to make contact with the root tip for positioning, data returned by the root tip position is calculated by the data calculation module, measurement and calculation are integrated in the APP, the calculation speed is high, stability is high, and the root tip positioning process is conveniently observed and recorded in real time.

Description

Technical Field

[0001] This utility model mainly relates to the field of root canal length measurement technology, specifically a dental root canal length measuring instrument based on an Android system APP. Background Technology

[0002] A dental root canal length measuring instrument is used to measure the length of the root canals in human teeth. This instrument assists dentists in root canal treatment, effectively improving the speed and accuracy of the treatment. Since 1979, root canal length measuring instruments have gone through three generations. The first generation (impedance method) was designed based on the resistance at the root apex of the tooth. The instrument was simple and inexpensive, but its accuracy did not meet clinical requirements, it had high requirements for the oral physicochemical environment, and it was inconvenient to use; it has been phased out. The second generation (voltage gradient method, current density method) was designed based on the rate of change of resistance at the root apex. This was more difficult to implement, the circuitry was complex, the instrument was expensive, and the accuracy was still not ideal. The third generation (proportional method, frequency response relative value method) was designed based on the response of the root apical impedance to two alternating currents of different frequencies.

[0003] Currently available third-generation root canal length measuring instruments are mostly based on microcontroller output, replacing the original analog signals with digital signals without the need for a carrier wave. However, their calculation speed and stability are limited by the performance of the microcontroller. Furthermore, the measurement data is displayed directly on the instrument, making it impossible to record and replay the apical localization process, which is detrimental to case preparation. Also, after a period of use, the parameters of the internal components are prone to shift, requiring manual calibration, making them inconvenient to use. Utility Model Content

[0004] The purpose of this invention is to provide a dental root canal length measuring instrument based on an Android system APP, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a dental root canal length measuring instrument based on an Android system APP, including a labial hook and a root canal file, and also including a signal acquisition device. The signal acquisition device is connected to the labial hook and the root canal file by a measuring line group. The signal acquisition device includes an Android interface, a dual-channel operational amplifier, a data storage device and an audio decoding chip. The Android interface is electrically connected to an Android APP.

[0006] The Android APP includes a waveform generation module and a data calculation module. The waveform generation module generates a sine wave signal with a specific wavelength, and the data calculation module calculates the returned measurement data.

[0007] The audio decoding chip performs digital-to-analog conversion of waveform signals between the Android APP and the end of the root canal file.

[0008] Preferably, the lip hook includes a first hook portion, the end of the first hook portion extending to form a second hook portion, the bending directions of the first hook portion and the second hook portion being opposite.

[0009] Preferably, the data cable assembly includes one main cable and two secondary cables, with a branch connector connecting the main cable and the secondary cables. The main cable is connected to a signal acquisition device, and an electrical connector is fixedly connected to the end of any one of the secondary cables. The lip hook and the root canal file are respectively inserted into an electrical connector.

[0010] Preferably, the waveform generated by the waveform generation module is two channels, one of which is L1 with a frequency of 400 Hz and a voltage of 0.65 V, and the other is L2 with a frequency of 8000 Hz and a voltage of 0.65 V.

[0011] Preferably, the content displayed on the UI of the Android APP includes the real-time calculation results of the data calculation module.

[0012] Preferably, the signal acquisition device 1 also includes LED lights.

[0013] Preferably, the audio decoding chip is model SSS1700B1_QFN36.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention provides a dental root canal length measuring instrument based on an Android system APP. The Android APP is connected to a signal acquisition unit through a measuring cable group. The waveform generation module emits two sine waves of specific frequencies, which are amplified by a dual-channel operational amplifier and then converted into analog signals by an audio decoding chip. The analog signals are used to locate the root apex of the tooth by contacting the root canal file. The data returned from the root apex position is converted back into digital signals by the audio decoding chip and returned to the data calculation module for calculation. The measurement and calculation are integrated into the Android APP, resulting in fast calculation speed and strong stability.

[0016] This invention provides a dental root canal length measuring instrument based on an Android system APP. The measurement results of the data calculation module are displayed in real time through the UI interface of the Android APP. The root apex positioning process can be observed and recorded in real time, which is convenient for medical staff to make case studies and subsequent simulation playback. The Android APP connects the signal acquisition device directly to the cloud. After each connection, the parameters of each component in the signal acquisition device are uploaded to the cloud based on the network environment, which facilitates online upgrades, calibration and fault reporting analysis without the need for manual calibration.

[0017] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of the present invention and other related contents, and should not be considered as limitations on the present invention.

[0019] In the accompanying drawings of the instruction manual:

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the signal acquisition circuit of this utility model;

[0022] Figure 3 This is a schematic block diagram illustrating the working principle of this utility model;

[0023] Figure label:

[0024] 1. Signal acquisition unit; 101. Android interface; 102. Dual operational amplifier; 103. Data storage device; 104. Audio decoding chip; 105. LED light; 2. Measurement cable group; 21. Main cable; 22. Branch cable; 23. Sub-cable; 3. Electrical connector; 4. Lip hook; 41. First hook part; 42. Second hook part; 5. Root canal file; 6. Android APP. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] like Figures 1 to 3 As shown, a dental root canal length measuring instrument based on an Android system APP includes a labial hook 4 and a root canal file 5, and also includes a signal acquisition unit 1. The signal acquisition unit 1 is connected to the labial hook 4 and the root canal file 5 by a measuring line group 2. The signal acquisition unit 1 includes an Android interface 101, a dual-channel operational amplifier 102, a data storage 103 and an audio decoding chip 104. The Android interface 101 is electrically connected to an Android APP 6.

[0028] The Android APP6 includes a waveform generation module and a data calculation module. The waveform generation module generates a sine wave signal with a specific wavelength, and the data calculation module calculates the returned measurement data.

[0029] The audio decoding chip 104 performs digital-to-analog conversion of waveform signals between the Android APP 6 and the root canal file 5.

[0030] The lip hook 4 includes a first hook portion 41, and the end of the first hook portion 41 extends to form a second hook portion 42. The first hook portion 41 and the second hook portion 42 have opposite bending directions. The first hook portion 41 hooks the patient's lip position, and the second hook portion 42 lifts up to hold the teeth to prevent the patient from accidentally closing their upper and lower teeth and affecting the test.

[0031] The data cable assembly 2 includes a main cable 21 and two auxiliary cables 23. A splitter 22 connects the main cable 21 and the auxiliary cables 23. The main cable 21 is connected to the signal acquisition unit 1. An electrical connector 3 is fixedly connected to the end of any one of the auxiliary cables 23. The lip hook 4 and the root canal file 5 are respectively inserted into one of the electrical connectors 3. The lip hook 4 and the root canal file 5 are detachable from the data cable assembly 2 through the two electrical connectors 3, and can be stored separately when not in use.

[0032] The signal acquisition device 1 also includes an LED light 105, which is connected to the data storage device 103. When the data storage device 103 is performing normal data access, the LED light 105 lights up to visually display the working status of the device.

[0033] The audio decoding chip 104 is model SSS1700B1_QFN36.

[0034] The dual operational amplifier 102 is model RS622.

[0035] The data storage device 103 is model 24C0X.

[0036] The waveform generation module generates two waveforms: L1 with a frequency of 400 Hz and L2 with a frequency of 8000 Hz. The input voltage of L1 is V1i, and its output voltage is V1o; the input voltage of L2 is V2i, and its output voltage is V2o. V1i and V2i are equal and both are 0.65V. The impedance response of the tooth root apex to L1 follows the formula F1, where F1 = V1o / V1i. The impedance response of the tooth root apex to L2 follows the formula F2, where F2 = V2o / V2i, and F = F1 / F2. The testing environment inside the tooth is similar to a resistor-capacitor combination model, and there is a mapping relationship between the voltage ratios (F1, F2) and the distance between the needle tip and the root apex. Therefore, the tooth root apex localization process can be recorded in real time based on the changes in the F value.

[0037] The UI of the Android APP6 displays the real-time calculation results of the data calculation module. The Android APP6 is also connected to the cloud network to transfer the detection calculation results to the cloud and simultaneously upload the parameters of each component in the signal acquisition unit 1 to the cloud, which facilitates online upgrades, calibrations and fault reporting analysis.

[0038] The implementation principle of this application embodiment is as follows: When using this product, medical staff connect the labial hook 4 and the root canal file 5 to the measuring line group 2, and connect the signal acquisition device 1 to an Android device such as a mobile phone or tablet with an Android APP 6 installed. At this time, the parameters of each component in the signal acquisition device 1 will be directly synchronized to the cloud by the Android APP 6, which facilitates subsequent online upgrades, calibrations and fault reporting analysis. The medical staff hooks the first hook part 41 of the labial hook 4 onto the patient's lip and lifts the second hook part 42 to hold the tooth. Then, the root canal file 5 is slowly inserted into the tooth to be tested. At the same time, the L1 and L2 waveforms sent by the Android APP 6 are transmitted to the tooth to be tested through the signal acquisition device 1 and the test results are returned to the data calculation module for calculation. The calculation results are displayed in real time on the UI interface of the Android APP 6, and the change process of the results is uploaded to the cloud to obtain the positioning process, which facilitates subsequent simulation playback and case preparation.

[0039] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from its essential characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A dental root canal length measuring instrument based on an Android system APP, comprising a labial hook (4) and a root canal file (5), characterized in that: It also includes a signal acquisition device (1), which is connected to a measuring line group (2) between the signal acquisition device (1) and the lip hook (4) and the root canal file (5). The signal acquisition device (1) includes an Android interface (101), a dual-channel operational amplifier (102), a data storage device (103) and an audio decoding chip (104). The Android interface (101) is electrically connected to an Android APP (6). The Android APP (6) includes a waveform generation module and a data calculation module. The waveform generation module generates a sine wave signal with a specific wavelength, and the data calculation module calculates the returned measurement data. The audio decoding chip (104) performs digital-to-analog conversion of waveform signals between the Android APP (6) and the root canal file (5).

2. The dental root canal length measuring instrument based on an Android system APP according to claim 1, characterized in that: The lip hook (4) includes a first hook portion (41), the end of which extends to form a second hook portion (42), the bending directions of the first hook portion (41) and the second hook portion (42) being opposite.

3. The dental root canal length measuring instrument based on an Android system APP according to claim 1, characterized in that: The measurement line group (2) includes a main line (21) and two auxiliary lines (23). A branch line head (22) is connected between the main line (21) and the auxiliary lines (23). The main line (21) is connected to the signal acquisition device (1). An electrical socket (3) is fixedly connected to the end of any of the auxiliary lines (23). The lip hook (4) and the root canal file (5) are respectively inserted into an electrical socket (3).

4. A dental root canal length measuring instrument based on an Android system APP according to claim 1, characterized in that: The waveform generation module generates two waveforms: one is L1 with a frequency of 400 Hz and a voltage of 0.65 V, and the other is L2 with a frequency of 8000 Hz and a voltage of 0.65 V.

5. A dental root canal length measuring instrument based on an Android system APP according to claim 1, characterized in that: The signal acquisition device (1) also includes an LED light (105).

6. A dental root canal length measuring instrument based on an Android system APP according to claim 1, characterized in that: The audio decoding chip (104) is model SSS1700B1_QFN36.

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