Root measurement precision detector

Abstract

The utility model belongs to the technical field of dental medical equipment, and relates to a root measurement precision detector. The root measurement precision detector comprises a shell and a circuit assembly, a mounting cavity is formed in the shell, at least one mounting hole is formed in the side face of the shell and communicates with the mounting cavity, and a power supply cavity is formed in the bottom of the shell; the circuit assembly is installed in the installation cavity and comprises a circuit board, a first wiring terminal and a second wiring terminal, the circuit board is installed in the installation cavity, a detection circuit is integrated on the circuit board, and the first wiring terminal and the second wiring terminal are installed on the circuit board and at least partially penetrate through the installation hole to extend out of the shell. According to the technical scheme provided by the invention, each root measuring instrument can be detected, and the accuracy of root canal measurement is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of dental medical equipment, and more specifically, to a root measurement accuracy detector. Background Art

[0002] Accurately measuring the working length of the root canal is a prerequisite for successful root canal treatment. The commonly used medical device for measuring the length of the root canal of a tooth is the apex locator, which includes a root canal file and a lip hook connected to a measuring electrode. When in use, the lip hook is hung on the lips, the root canal file is inserted into the exposed root canal and the root canal file is moved downward. During the movement of the root canal file, the apex locator will display the position of the apex of the root canal file in the root canal. When the root canal file locator shows that it has reached the apex point, the length of the root canal file entering the root canal is the actual length of the root canal.

[0003] Since the accuracy of root canal measurement lays the foundation for subsequent treatment, the accuracy of root canal measurement plays a key role in root canal treatment. The traditional method of testing and judging the measurement accuracy of the apex locator is to find a test patient and compare the results of manual measurement with the measurement results of the root canal length measuring instrument. This traditional testing method has poor accuracy, causes certain pain to patients during the measurement process, and cannot meet the needs of mass application during production. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the traditional root canal measurement accuracy detection method is complex and has low accuracy and cannot be applied in batches.

[0005] In order to solve the above technical problems, the utility model provides a root measurement accuracy detector, which adopts the following technical solutions:

[0006] A root measurement accuracy detector comprises a housing and a circuit assembly;

[0007] The housing has a mounting cavity therein, and the side of the housing is provided with at least one mounting hole, the mounting hole being in communication with the mounting cavity;

[0008] The circuit assembly is installed in the installation cavity, and the circuit assembly includes a circuit board, a first terminal and a second terminal. The circuit board is installed in the installation cavity, and a detection circuit is integrated on the circuit board. The first terminal and the second terminal are installed on the circuit board and at least partially extend out of the housing through the installation hole.

[0009] Furthermore, the detection circuit includes a first end, a second end, a control circuit and an RC circuit, the first end is electrically connected to the first terminal, the second end is electrically connected to the second terminal, the RC circuit is connected between the first end and the second end, and the control circuit is connected to the RC circuit.

[0010] Furthermore, the housing includes a first shell and a second shell, the first shell is mounted on the second shell, and the mounting cavity is formed between the first shell and the second shell;

[0011] The first housing is provided with a first mounting groove, the second housing is provided with a second mounting groove, the first mounting groove and the second mounting groove are combined to form the mounting hole, and the first wiring terminal and the second wiring terminal are respectively clamped between the first mounting groove and the second mounting groove;

[0012] The circuit board is clamped between the first shell and the second shell.

[0013] Furthermore, the first shell is provided with a positioning column, the second shell is provided with a positioning boss, the top surface of the positioning boss is provided with a positioning block, and the positioning boss is provided with a through hole penetrating the second shell;

[0014] The circuit board is provided with a positioning hole, and the circuit board is positioned and mounted on the second shell through the cooperation of the positioning hole and the positioning block. After the positioning column passes through the positioning hole, it is at least partially inserted into the through hole, so that the first shell is positioned and mounted on the second shell.

[0015] Furthermore, the housing further comprises a fixing piece, a connecting hole is provided at the end of the positioning column, and the fixing piece is inserted into the through hole and fixedly connected to the connecting hole.

[0016] Furthermore, the root measurement accuracy detector also includes a power supply;

[0017] The housing further comprises a battery stopper. The second housing is provided with an opening on a side away from the first housing. The battery stopper is installed in the second housing and forms a power supply cavity around the opening. The power supply member is installed in the power supply cavity.

[0018] Furthermore, the circuit assembly also includes at least one key module, the key module includes a button and a key circuit, the key circuit is installed on the circuit board, and the button is installed on the first shell.

[0019] Further, the first housing is provided with at least one button hole, the number of the button holes is the same as that of the key module and the positions are corresponding, the key module further includes an elastic member, the button is movably mounted in the button hole, and the elastic member is connected between the circuit board and the button; and / or,

[0020] The first shell is provided with at least one button hole, the number of the button holes is consistent with that of the key modules and the positions are corresponding, and the button is integrally formed in the button hole.

[0021] Furthermore, the circuit assembly also includes a display module, the display module includes a display circuit and a display screen, the display circuit is installed on the circuit board, the display screen is installed on the first shell, and the display screen is electrically connected to the display circuit.

[0022] Furthermore, the circuit assembly also includes a charging base, which is installed on the circuit board and at least partially exposed through the shell.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] The root measurement accuracy detector provided by the present application is equipped with a circuit component with a detection function in a shell. The circuit component is connected to the apex file and the lip hook through a first terminal and a second terminal respectively. The accuracy of the apex locator is detected through the detection circuit integrated on the circuit board. The detection circuit is used to replace the traditional manual measurement method, which simplifies the detection method, improves the measurement accuracy, avoids repeated measurements on patients, and eliminates the psychological burden on patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the scheme of the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 It is a structural schematic diagram of a root measurement accuracy detector according to an embodiment of the utility model;

[0027] Figure 2 It is a schematic diagram of the structure explosion of the root measurement accuracy detector of the embodiment of the utility model;

[0028] Figure 3 It is a structural schematic diagram of the second housing of an embodiment of the utility model;

[0029] Figure 4is a schematic structural diagram of the second housing in another direction of an embodiment of the utility model;

[0030] Figure 5 It is a schematic diagram of the structure explosion of a root measurement accuracy detector according to another embodiment of the utility model.

[0031] Reference numerals:

[0032] 1. Shell; 11. First shell; 111. First mounting slot; 112. Button hole; 113. Screen mounting hole; 12. Second shell; 121. Second mounting slot; 122. Positioning boss; 1221. Positioning block; 1222. Through hole; 123. Opening; 13. Fixing piece; 14. Foot pad; 15. Battery limiter; 16. Cover; 17. Gasket; 18. Protective film; 21. Circuit board; 211. Positioning hole; 22. First wiring terminal; 23. Second wiring terminal; 241. Button; 242. Key circuit; 251. Display screen; 26. Charging stand; 3. Power supply. DETAILED DESCRIPTION

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0034] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0035] See also Figure 1 , Figure 2 As shown, the utility model provides a root measurement accuracy detector, which includes a housing 1 and a circuit component.

[0036] In some embodiments, the housing 1 has an installation cavity therein, the side of the housing 1 is provided with at least one installation hole, the installation hole is communicated with the installation cavity, and the bottom of the housing 1 is provided with a power supply cavity.

[0037] The circuit assembly is installed in the installation cavity, and the circuit assembly includes a circuit board 21, a first terminal 22 and a second terminal 23. The circuit board 21 is installed in the installation cavity, and a detection circuit is integrated on the circuit board 21, wherein the detection circuit has a first end and a second end, the first terminal 22 is installed on the circuit board 21, and is connected to the first end of the detection circuit, the first terminal 22 at least partially passes through the installation hole to extend out of the housing 1 and is connected to the root canal file (not shown in the figure) of the root apex locator (not shown in the figure); the second terminal 23 is installed on the circuit board 21 and is connected to the second end of the detection circuit, the second terminal 23 at least partially passes through the installation hole to extend out of the housing 1 and is connected to the lip hook of the root apex locator.

[0038] In this embodiment, two mounting holes are provided on the side of the housing 1, specifically a first mounting hole and a second mounting hole. One end of the first wiring terminal 22 is connected to the first end of the detection circuit, and the other end passes through the first mounting hole to extend out of the housing 1 and is connected to the root canal file of the root apex locator; one end of the second wiring terminal 23 is connected to the second end of the detection circuit, and the other end passes through the second mounting hole to extend out of the housing 1 and is connected to the lip hook of the root apex locator.

[0039] The root measurement accuracy detector provided in the present application is equipped with a circuit component with a detection function in the housing 1. The circuit component is connected to the apex file and the lip hook through the first terminal 22 and the second terminal 23 respectively. The accuracy of the apex locator is detected through the detection circuit integrated on the circuit board 21. The detection circuit is used to replace the traditional manual measurement method, which simplifies the detection method, improves the measurement accuracy, avoids repeated measurements on patients, and eliminates the psychological burden of patients.

[0040] In some embodiments, the detection circuit further includes a first end, a second end, a control circuit and an RC circuit, the first end is electrically connected to the first wiring terminal 22, the second end is electrically connected to the second wiring terminal 23, the RC circuit is connected between the first end and the second end, and the control circuit is connected to the RC circuit;

[0041] The RC circuit includes a digital potentiometer R1 and a capacitor C. The digital potentiometer R1 includes a communication pin, a first output pin and a second output pin. The communication pin is connected to the control circuit, the first output pin is connected to the first end, the second output pin is connected to the capacitor C, and the second end is connected to the capacitor C.

[0042] The utility model adopts a digital potentiometer R1 and a capacitor C to form an RC circuit, and changes the output resistance of the digital potentiometer R1 through a control circuit, thereby changing the resistance between the root file and the lip hook, so as to simulate the root canal environment impedance from the root canal orifice to beyond the apical foramen, thereby meeting the demand for accurate measurement of the entire root canal length range of the root apex locator. Compared with the traditional manual measurement method, the utility model is easy to operate and has accurate readings, which can improve the measurement accuracy.

[0043] Please continue reading Figure 1 , Figure 2 As shown, in some embodiments, the housing 1 includes a first shell 11 and a second shell 12 , the first shell 11 is mounted on the second shell 12 , and the mounting cavity is formed between the first shell 11 and the second shell 12 .

[0044] In this embodiment, a dustproof groove (not shown in the figure) is provided on the first shell 11, and a dustproof protrusion 124 is provided at a position corresponding to the dustproof groove of the second shell 12. When the first shell 11 is installed on the second shell 12, the dustproof protrusion 124 is placed in the dustproof groove to improve the sealing performance of the outer shell 1 and realize dustproofing in the installation cavity. At the same time, the interlocking effect of the dustproof protrusion 124 and the dustproof groove can reduce the seam and achieve the effect of beautifying the seam.

[0045] In this embodiment, the first shell 11 and the second shell 12 are both made of plastic or non-metallic materials. The first shell 11 is also provided with a convex buckle (not shown in the figure), and the second shell 12 is also provided with a hook (not shown in the figure). The first shell 11 and the second shell 12 are snap-connected by the cooperation of the convex buckle and the hook.

[0046] In other embodiments, the first shell 11 and the second shell 12 are both made of aluminum alloy, and the outer shell further includes a fixing member 13, which is a fixing bolt. The fixing bolt passes through the second shell 12 and is threadedly engaged with the first shell 11 to achieve fixed assembly of the first shell 11 and the second shell 12.

[0047] See also Figure 2 As shown, in some embodiments, the first shell 11 is provided with a first mounting groove 111, and the second shell 12 is provided with a second mounting groove 121. The first mounting groove 111 and the second mounting groove 121 are combined to form the mounting hole, and the first wiring terminal 22 and the second wiring terminal 23 are respectively clamped between the first mounting groove 111 and the second mounting groove 121, and the circuit board 21 is clamped between the first shell 11 and the second shell 12.

[0048] The housing 1 provided by the utility model adopts a split design of a first shell 11 and a second shell 12, so that the internal structure can be replaced or repaired when a fault occurs in the root measurement accuracy detector; in addition, by clamping the circuit board 21, the first terminal 22 and the second terminal 23 between the first shell 11 and the second shell 12, the circuit components can be positioned and installed and the installation stability can be improved.

[0049] See also Figure 2 , Figure 3 As shown, in some embodiments, a positioning column (not shown in the figure) is provided on the first shell 11, and a positioning boss 122 is provided on the second shell 12. A positioning block 1221 is provided on the top surface of the positioning boss 122. A through hole 1222 penetrating the second shell 12 is provided in the positioning boss 122. When the first shell 11 is installed on the second shell 12, the positioning column is at least partially inserted into the through hole 1222 to achieve the positioning and installation of the first shell 11 on the second shell 12.

[0050] See also Figure 2 As shown, in some embodiments, a positioning hole 211 is provided on the circuit board 21, the shape of the positioning hole 211 matches the shape of the positioning block 1221, and the positioning hole 211 is coaxially arranged with the through hole 1222 of the positioning boss 122, and the circuit board 21 is mounted on the second shell 12 through the matching positioning of the positioning hole 211 and the positioning block 1221.

[0051] In the present invention, the positioning column passes through the positioning hole 211 and is then placed into the through hole 1222, so that the first shell 11 is positioned and installed on the second shell 12, so as to achieve the positioning and assembly of the first shell 11 and the second shell 12, and further fix the position of the circuit board 21, thereby improving the installation accuracy and stability of the circuit board 21.

[0052] Please continue reading Figure 2 As shown, in some embodiments, the housing 1 also includes a fixing member 13, and a connecting hole (not shown in the figure) is provided at the end of the positioning column. The fixing member 13 is inserted into the through hole 1222 and fixedly connected to the connecting hole. In this embodiment, the fixing member 13 is a fixing bolt, and the connecting hole is a threaded hole. The first shell 11 is fixed to the second shell 12 by cooperating with the fixing bolt and the threaded hole.

[0053] In other embodiments, the fixing member 13 and the connecting hole may also be fitted by interference or snap fit.

[0054] See also Figure 4As shown, in some embodiments, the housing 1 further includes a foot pad 14 , and the foot pad 14 is at least partially inserted into the through hole 1222 to completely cover the fixing member 13 .

[0055] See also Figure 2 , 3 As shown, in some embodiments, the root measurement accuracy tester also includes a power supply 21, the shell 1 also includes a battery limiter 15, and the second shell 12 is provided with an opening 123 on the side away from the first shell 11. In this embodiment, the opening 123 passes through the second shell 12, and the battery limiter 15 is installed in the second shell 12 and forms the power supply cavity around the opening 123. In this embodiment, the power supply 13 is installed in the power supply cavity and is electrically connected to the circuit board 21, wherein the power supply 13 can be a disposable battery or a rechargeable lithium battery.

[0056] In the embodiment of the present application, a power supply cavity is provided in the housing to accommodate the power supply component 13, so that the root measurement accuracy detector can be operated without connecting a charging cable, thereby improving the portability of the root measurement accuracy detector.

[0057] See also Figure 4 As shown, in some embodiments, the housing 1 further includes a cover 16 , and the cover 16 is detachably mounted on a side of the second shell 12 away from the first shell 11 to seal the power supply cavity.

[0058] See also Figure 2 As shown, in some embodiments, the circuit component also includes at least one button module. In this embodiment, the number of the button modules is four, corresponding to functions such as switch, directory, increase resistance, decrease resistance, and selection of the model of the root tester to be detected.

[0059] In this embodiment, the key module includes a button 241 and a key circuit 242, wherein the key circuit 242 is mounted on the circuit board 21, and the button 241 is mounted on the first shell 11, wherein the key circuit 242 is electrically connected to the control circuit for outputting a signal to the control circuit, and the control circuit adjusts the output resistance of the digital potentiometer R1 based on the received signal, thereby changing the resistance between the root file and the lip hook to realize the root canal environment impedance from the simulated root canal orifice to beyond the apical foramen.

[0060] In some embodiments, at least one button hole 112 is disposed on the first shell 11 . In this embodiment, the number of the button holes 112 is consistent with the number of the key modules and the positions are corresponding. The number of the button holes 112 is four.

[0061] See also Figure 2As shown, in this embodiment, the button module also includes an elastic member (not shown in the figure), the button 241 is movably installed in the button hole 112, the elastic member is connected between the circuit board 21 and the button 241, and the elastic member is used to push the button 241 to reset to avoid continuous triggering of the button circuit 242, thereby improving the detection accuracy of the root measurement accuracy detector.

[0062] In some embodiments, the housing 1 also includes a gasket 17, which is installed on the inner side of the first shell 11, and the gasket 17 is provided with an anti-fool hole (not shown in the figure) at the position corresponding to the button hole 112, and a sealing gasket is provided on the gasket, and a limiting protrusion is provided on the inner wall of the anti-fool hole (not shown in the figure), and a limiting groove cooperating with the limiting protrusion is provided on the side wall of the button 241. The button 241 passes through the anti-fool hole and the button hole 112 in turn and is exposed to the first shell 11, and the limiting protrusion cooperates with the limiting groove to limit the relative rotation of the button; at the same time, the sealing gasket fits tightly with the side of the button 241 to achieve sealing of the button hole 112 and achieve a dust-proof effect.

[0063] See also Figure 5 As shown, in other embodiments, the button 241 can also be integrally formed in the button hole 112, and the button 241 is made of a deformable tough material. When the user triggers the button 241, the button 241 can be reset due to the properties of its own material to avoid continuous triggering of the key circuit 242, thereby improving the detection accuracy of the root measurement accuracy detector.

[0064] See also Figure 2 As shown, in some embodiments, the circuit component also includes a display module, and the display module includes a display circuit (not shown in the figure) and a display screen 251. The display circuit is installed on the circuit board 21, and the display screen 251 is installed on the first shell 11. The display screen 251 is electrically connected to the display circuit. In this embodiment, the display circuit is electrically connected to the control circuit, and the control circuit outputs the current resistance signal to the display circuit. The display circuit processes the signal and outputs it to the display screen 251. The current output resistance is displayed on the display screen 251, so that the user can accurately understand the current resistance value and improve the detection accuracy of the root measurement accuracy detector.

[0065] In this embodiment, a screen mounting hole 113 is defined in the first housing 11 , and the display screen 251 is mounted in the screen mounting hole 113 .

[0066] See also Figure 5As shown, in some embodiments, the shell 1 also includes a protective film 18, which covers the side of the first shell 11 away from the second shell 12 and is used to seal the screen mounting hole 113 and the button hole 112 of the first shell 11. In this embodiment, the protective film 18 is made of a transparent material.

[0067] In some embodiments, the display module further includes a screen buffer pad (not shown in the figure), which is installed between the display screen 151 and the first shell 11. In this embodiment, the screen buffer pad is made of transparent material.

[0068] See also Figure 2 , Figure 5 As shown, in some embodiments, the circuit assembly also includes a charging base 26, which is installed on the circuit board 21, and the charging base 26 is at least partially exposed through the housing 1. In this embodiment, the charging base 26 is electrically connected to the circuit board 21. When the power supply 3 is a rechargeable lithium battery, the charging base 26 can also be electrically connected to the power supply 3.

[0069] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A root measurement accuracy detector, characterized in that: including a housing and a circuit assembly; The housing has a mounting cavity therein, and the side of the housing is provided with at least one mounting hole, the mounting hole being in communication with the mounting cavity; The circuit assembly is installed in the installation cavity, and the circuit assembly includes a circuit board, a first terminal and a second terminal. The circuit board is installed in the installation cavity, and a detection circuit is integrated on the circuit board. The first terminal and the second terminal are installed on the circuit board and at least partially extend out of the housing through the installation hole.

2. The root measurement accuracy detector according to claim 1, characterized in that: The detection circuit includes a first end, a second end, a control circuit and an RC circuit, the first end is electrically connected to the first terminal, the second end is electrically connected to the second terminal, the RC circuit is connected between the first end and the second end, and the control circuit is connected to the RC circuit.

3. The root measurement accuracy detector according to claim 1, characterized in that: The housing comprises a first shell and a second shell, the first shell is mounted on the second shell, and the mounting cavity is formed between the first shell and the second shell; The first housing is provided with a first mounting groove, the second housing is provided with a second mounting groove, the first mounting groove and the second mounting groove are combined to form the mounting hole, and the first wiring terminal and the second wiring terminal are respectively clamped between the first mounting groove and the second mounting groove; The circuit board is clamped between the first shell and the second shell.

4. The root measurement accuracy detector according to claim 3, characterized in that: The first shell is provided with a positioning column, the second shell is provided with a positioning boss, the top surface of the positioning boss is provided with a positioning block, and the positioning boss is provided with a through hole penetrating the second shell; The circuit board is provided with a positioning hole, and the circuit board is positioned and mounted on the second shell through the cooperation of the positioning hole and the positioning block. After the positioning column passes through the positioning hole, it is at least partially inserted into the through hole, so that the first shell is positioned and mounted on the second shell.

5. The root measurement accuracy detector according to claim 4, characterized in that: The housing further comprises a fixing piece, a connecting hole is arranged at the end of the positioning column, and the fixing piece is inserted into the through hole and fixedly connected with the connecting hole.

6. The root measurement accuracy detector according to claim 3, characterized in that: The root measurement accuracy detector also includes a power supply; The housing further comprises a battery stopper. The second housing is provided with an opening on a side away from the first housing. The battery stopper is installed in the second housing and forms a power supply cavity around the opening. The power supply member is installed in the power supply cavity.

7. The root measurement accuracy detector according to claim 3, characterized in that: The circuit assembly further includes at least one key module, the key module includes a button and a key circuit, the key circuit is installed on the circuit board, and the button is installed on the first shell.

8. The root measurement accuracy detector according to claim 7, characterized in that: The first housing is provided with at least one button hole, the number of the button holes is the same as that of the key module and the positions are corresponding, the key module further comprises an elastic member, the button is movably mounted in the button hole, and the elastic member is connected between the circuit board and the button; and / or, The first shell is provided with at least one button hole, the number of the button holes is consistent with that of the key modules and the positions are corresponding, and the button is integrally formed in the button hole.

9. The root measurement accuracy detector according to claim 3, characterized in that: The circuit assembly also includes a display module, which includes a display circuit and a display screen. The display circuit is installed on the circuit board, the display screen is installed on the first shell, and the display screen is electrically connected to the display circuit.

10. The root measurement accuracy detector according to claim 3, characterized in that: The circuit assembly further comprises a charging base, which is mounted on the circuit board and at least partially exposed through the housing.

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