Experimental platform for dynamic performance research of ultrasonic scaler and working method of experimental platform

Abstract

The invention provides an experimental platform for dynamic performance research of an ultrasonic scaler and a working method of the experimental platform. The experimental platform comprises a single-point laser vibration meter, a three-degree-of-freedom ultrasonic scaler handle clamp and a dental surface sediment sample clamp, and the three-degree-of-freedom ultrasonic scaler handle clamp and the dental surface sediment sample clamp are both mounted on the supporting platform; the three-degree-of-freedom ultrasonic scaler handle clamp is used for clamping and fixing an ultrasonic scaler handle, and an ultrasonic scaler working tip is arranged at the front end of the ultrasonic scaler handle; the dental surface sediment sample clamp is used for clamping and fixing a dental surface sediment sample and tightly extruding the dental surface sediment sample and a working tip of the ultrasonic scaler; the single-point laser vibration meter is mounted on the support frame, is focused on the working tip of the ultrasonic scaler, and is used for measuring the ultrasonic vibration of the working tip of the ultrasonic scaler. According to the invention, measurement of vibration data at different points of the working tip of the ultrasonic scaler can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of dental medical equipment, and in particular to an experimental platform for studying the dynamic performance of an ultrasonic dental scaler and a working method thereof. Background Art

[0002] Nearly half of the world's population suffers from periodontal disease to varying degrees. Teeth cleaning is one of the conventional measures to prevent and treat periodontal disease. Ultrasonic vibration teeth cleaning has greater advantages than manual teeth cleaning. Power ultrasonic technology uses high-frequency vibration to remove dental plaque (tooth surface deposits), which can not only reduce operator fatigue, promote the removal of calculus and biofilm, but also effectively protect the patient's gums. Therefore, ultrasonic tooth cleaning machine is an important medical device in modern periodontal scaling.

[0003] Ultrasonic dental scaler is an ultrasonic vibration device. Its core components are piezoelectric ultrasonic transducer and cleaning tip. Piezoelectric ultrasonic transducer consists of a back cover, piezoelectric stack and horn. When the ultrasonic dental scaler is working, the external power supply first inputs high-frequency oscillating current into the piezoelectric stack, and then the piezoelectric stack converts the high-frequency oscillating current into high-frequency vibration and inputs it into the horn. The high-frequency vibration is then amplified by the horn and input into the cleaning tip, so that the cleaning tip generates the high-frequency vibration required for periodontal cleaning. Its working principle uses a transducer to convert high-frequency vibration current into high-frequency mechanical vibration, cavitation effect and micro-acoustic flow of the cleaning tip, thereby destroying and removing dental plaque (tooth surface deposits).

[0004] Like any ultrasonic vibration device, if you want to optimize and innovate the ultrasonic dental scaler, you must first understand its dynamic performance in the cleaning environment and establish a suitable equivalent mathematical model to provide a basis for future research. The establishment of the mathematical model and whether the mathematical model can effectively reflect the dynamic characteristics of the ultrasonic dental scaler need to be supported and verified by experimental data. In addition, during the use of ultrasonic dental scaler, the efficiency of removing tooth surface deposits and the degree of root surface damage depend not only on the power, frequency and selected working tip of the ultrasonic dental scaler handle, but also on the doctor's operating skills. During the operation of the ultrasonic dental scaler, the force required to maintain the cleaning working tip in contact with the tooth surface is called lateral pressure. The lateral pressure used by the oscillating working tip varies according to the type of tooth surface deposits removed, ranging from 0.5-2.0N. Pressures less than this range may limit the clinician's ability to maintain the working tip in contact with the tooth surface, while pressures greater than this range will affect the efficiency of tooth surface deposit removal and the amount of root surface damage. Therefore, lateral pressure is an important working parameter of the ultrasonic dental scaler handle under loading, and it is necessary to take it into consideration when studying the dynamic performance of the ultrasonic dental scaler. Therefore, an experimental device capable of simulating, measuring and recording the lateral pressure exerted on the handle of an ultrasonic dental scaler when it is loaded is also needed. Summary of the invention

[0005] According to the technical problems raised above, an experimental platform and a working method thereof for studying the dynamic performance of an ultrasonic dental scaler are provided.

[0006] The technical means adopted by the present invention are as follows:

[0007] An experimental platform for studying the dynamic performance of an ultrasonic tooth scaler comprises: a single-point laser vibrometer, a three-degree-of-freedom ultrasonic tooth scaler handle fixture and a tooth surface deposit sample fixture, wherein the three-degree-of-freedom ultrasonic tooth scaler handle fixture and the tooth surface deposit sample fixture are both mounted on a support platform and arranged close to each other; the three-degree-of-freedom ultrasonic tooth scaler handle fixture is used to clamp and fix an ultrasonic tooth scaler handle, wherein the front end of the ultrasonic tooth scaler handle has an ultrasonic tooth scaler working tip; the tooth surface deposit sample fixture is used to clamp and fix a tooth surface deposit sample and squeeze the tooth surface deposit sample and the ultrasonic tooth scaler working tip tightly; the single-point laser vibrometer is mounted on a support frame, focused on the ultrasonic tooth scaler working tip, and is used to measure the ultrasonic vibration of the ultrasonic tooth scaler working tip.

[0008] Furthermore, the three-degree-of-freedom ultrasonic dental cleaner handle clamp includes an XYZ three-degree-of-freedom manual slide, a micro-rotation platform and a C-type clamp, the C-type clamp is installed on the micro-rotation platform for clamping and fixing the ultrasonic dental cleaner handle, the micro-rotation platform is installed on the XYZ three-degree-of-freedom manual slide, and the XYZ three-degree-of-freedom manual slide is installed on the support platform.

[0009] Furthermore, the tooth surface deposit sample fixture includes flat-nose pliers, a spring clamping mechanism and a force sensor, the flat-nose pliers are installed on the spring clamping mechanism to fix the tooth surface deposit sample; the force sensor is connected to the spring clamping mechanism, and the spring clamping mechanism is installed on the supporting platform.

[0010] Furthermore, the spring clamping mechanism includes a rotating handle, a push plate, a spring, a linear guide and a slider, one side of the rotating handle has a screw, the middle part of the push plate is threadedly slidably connected to the screw, the bottom of the push plate is slidably connected to the linear guide, the linear guide is installed on a support platform, one end of the spring is connected to the push plate, the other end of the spring is connected to a force sensor, the force sensor is connected to the slider, the bottom of the slider is slidably connected to the linear guide, and the flat-nose pliers are installed on the slider.

[0011] Furthermore, bosses are arranged at intervals on the support platform, a through hole is provided in the middle of the boss, and the screw rod passes through the through hole.

[0012] Furthermore, the single-point laser vibrometer is a laser Doppler vibrometer.

[0013] Furthermore, it also includes a computer, and the single-point laser vibrometer is connected to the computer.

[0014] The present invention also provides a working method of an experimental platform for studying the dynamic performance of an ultrasonic tooth scaler, comprising the following steps:

[0015] Step 1: Fix the ultrasonic scaler handle with the C-type clamp on the three-degree-of-freedom ultrasonic scaler handle fixture;

[0016] Step 2: Turn on the single-point laser vibrometer, adjust the position of the ultrasonic scaler handle by rotating the knob on the three-degree-of-freedom ultrasonic scaler handle fixture, and focus the single-point laser vibrometer on the ultrasonic scaler working tip;

[0017] Step 3: Fix the tooth surface deposit sample with the flat-nose pliers on the tooth surface deposit sample fixture; then, rotate the rotating handle of the spring rotating mechanism to squeeze the tooth surface deposit and the ultrasonic scaler working tip tightly, and observe the degree of the force sensor to adjust the size of the required simulated lateral pressure;

[0018] Step 4: Press the pedal of the ultrasonic tooth cleaner to start the ultrasonic tooth cleaner, collect the vibration data measured by the single-point laser vibrometer through the computer, and export the experimental data on the computer connected to the back end of the force sensor for subsequent research and analysis.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. The present invention can facilitate the experimenter to focus the single-point laser vibrometer on the ultrasonic scaler working tip. And the handle position can be fine-tuned by manually rotating the knob on the three-degree-of-freedom ultrasonic scaler handle fixture to achieve the measurement of vibration data at different points of the ultrasonic scaler working tip.

[0021] 2. The present invention can simulate the lateral pressure applied by a dentist to the handle of the ultrasonic dental scaler when using the ultrasonic dental scaler, thereby being able to simulate the actual load condition of the handle of the ultrasonic dental scaler to a certain extent.

[0022] 3. All data measured by the present invention can be uploaded to a computer and collected by the computer, making it convenient for researchers to conduct subsequent analysis and processing of the data.

[0023] Based on the above reasons, the present invention can be widely promoted in the fields of dental medicine and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 It is a structural schematic diagram of the present invention.

[0026] Figure 2 It is a schematic structural diagram of the tooth surface deposit sample holder of the present invention.

[0027] In the figure: 1. Single-point laser vibrometer; 2. Three-degree-of-freedom ultrasonic scaler handle fixture; 3. Tooth surface deposit sample fixture; 4. Ultrasonic scaler handle;

[0028] 21. XYZ three-degree-of-freedom manual slide; 22. Micro-rotation platform; 23. C-type clamp;

[0029] 31. Flat-nose pliers; 321. Rotating handle; 322. Push plate; 323. Spring; 324. Linear guide; 325. Slider; 326. Boss; 33. Force sensor. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0033] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be clear that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0034] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0035] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0036] Example 1

[0037] The present invention provides an experimental platform for studying the dynamic performance of an ultrasonic tooth scaler, which can cooperate with a single-point laser vibrometer to measure and record the dynamic performance data of an ultrasonic tooth scaler handle during collision with dental calculus, providing a basis for studying the dynamic performance of an ultrasonic tooth scaler. In addition, in the dynamic performance test experiment of an ultrasonic tooth scaler handle, the platform can be fixedly used to simulate real tooth surface deposit samples and measure and record the lateral force exerted on the handle during cleaning, so as to simulate the real working conditions of the ultrasonic tooth scaler handle.

[0038] The experimental platform for studying the dynamic performance of ultrasonic dental scalers of the present invention can fill the existing technical gaps and meet the experimental needs. Figure 1 As shown, it contains the following three parts:

[0039] 1. Single point laser vibrometer 1;

[0040] 2. Three-degree-of-freedom ultrasonic dental scaler handle fixture 2;

[0041] 3. Tooth surface deposit sample holder 3.

[0042] These three parts work together to complete the dynamic performance experiment of the ultrasonic scaler. The three-degree-of-freedom ultrasonic scaler handle fixture 2 and the tooth surface deposit sample fixture 3 are both installed on the support platform and arranged close to each other; the three-degree-of-freedom ultrasonic scaler handle fixture 2 is used to clamp and fix the ultrasonic scaler handle 4, and the front end of the ultrasonic scaler handle 4 has an ultrasonic scaler working tip; the tooth surface deposit sample fixture 3 is used to clamp and fix the tooth surface deposit sample, and squeeze the tooth surface deposit sample and the ultrasonic scaler working tip tightly; the single-point laser vibrometer 1 is installed on the support frame, focused on the ultrasonic scaler working tip, and used to measure the ultrasonic vibration of the ultrasonic scaler working tip. The single-point laser vibrometer 1 is connected to a computer.

[0043] In the present invention, the single-point laser vibrometer 1 adopts the VibroFlex series laser Doppler vibrometer of Polytec, model VibroFlex Connect VFX-F-110, which can measure vibration without contacting the object being measured, is suitable for various surfaces, including greasy, shiny or dark surfaces, can measure vibration speeds up to ±30m / s, and synchronously output displacement, velocity and acceleration data, and can select up to 15 different frequency bandwidths from DC to 24MHz. Its performance meets the requirements for measuring the ultrasonic vibration of the ultrasonic scaler working tip, so this model of single-point laser vibrometer is selected.

[0044] The three-degree-of-freedom ultrasonic scaler handle fixture 2 is composed of an XYZ three-degree-of-freedom manual slide 21, a micro-rotation platform 22 and a C-type clamp 23. Figure 2The ultrasonic scaler handle 4 is clamped and fixed by a C-type clamp 23. The C-type clamp 23 is mounted on a micro-rotating platform 22, which is mounted on an XYZ three-degree-of-freedom manual slide 21, which is mounted on a supporting platform, and can realize movement in three directions of X, Y, and Z axes.

[0045] like Figure 2 As shown, the tooth surface deposit sample holder 3 consists of three parts:

[0046] (1) Flat-nose pliers 31;

[0047] (2) Spring tightening mechanism;

[0048] (3) Force sensor 33.

[0049] The flat-nose pliers 31 are mounted on a spring clamping mechanism, the force sensor 33 is connected to the spring clamping mechanism, and the spring clamping mechanism is mounted on a supporting platform.

[0050] Specifically, the flat-nose pliers 31 are used to fix the tooth surface deposit sample (the tooth surface deposit sample is clamped and fixed by the flat-nose pliers 31). The spring squeeze mechanism is composed of a rotating handle 321, a push plate 322, a spring 323, a linear guide 324 and a slider 325. One side of the rotating handle 321 is provided with a screw, the middle part of the push plate 322 is threadedly slidably connected to the screw, the bottom of the push plate 322 is slidably connected to the linear guide 324, the linear guide 324 is installed on the support platform, one end of the spring 323 is connected to the push plate 322, the other end of the spring 323 is connected to the force sensor 33, the force sensor 33 is connected to the slider 325, the bottom of the slider 325 is slidably connected to the linear guide 324, and the flat-nose pliers 31 is fixedly installed on the slider 325. In the present invention, a force sensor 33 is installed below the slider 325, and the force sensor 33 is placed between the spring 323 and the slider 325, and is used to measure the size of the lateral pressure applied to the ultrasonic scaler handle 4. The force sensor 33 is connected to a data processing backend for displaying real-time data and connecting to a computer. The spring squeeze mechanism is placed behind the force sensor 33, which compresses the spring 323 by pushing the push plate 322 through the handle 321, thereby squeezing the tooth surface deposit sample and the ultrasonic scaler working tip. Two bosses 326 are arranged at intervals on the support platform, and a through hole is provided in the middle of the boss 326, and the screw rod passes through the through hole, and the through hole limits the axial movement of the screw rod.

[0051] Example 2

[0052] like Figure 1 As shown, the present invention provides an experimental platform for the dynamic performance of an ultrasonic tooth scaler, comprising a single-point laser vibrometer 1, a three-degree-of-freedom ultrasonic tooth scaler handle fixture 2 and a tooth surface deposit sample fixture 3.

[0053] When using this platform, follow these steps to operate the experimental platform:

[0054] (1) Fix the ultrasonic scaler handle 4 with the C-shaped clamp 23 on the three-degree-of-freedom ultrasonic scaler handle fixture 2.

[0055] (2) Turn on the single-point laser vibrometer 1, adjust the position of the ultrasonic scaler handle 4 by rotating the knob on the three-degree-of-freedom ultrasonic scaler handle fixture 2, and focus the single-point laser vibrometer 1 on the ultrasonic scaler working tip.

[0056] (3) Fix the tooth surface deposit sample with the flat-nose pliers 31 on the tooth surface deposit sample holder 3. Then, rotate the rotating handle 321 of the spring rotating mechanism to squeeze the tooth surface deposit and the ultrasonic scaler working tip tightly, and observe the degree of the force sensor 33 to adjust the size of the required simulated lateral pressure.

[0057] (4) Press the pedal of the ultrasonic tooth cleaning machine to start the ultrasonic tooth cleaning machine, collect the vibration data measured by the single-point laser vibrometer 1 through the computer, and export the experimental data on the computer connected to the rear end of the force sensor 33 for subsequent research and analysis.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An experimental platform for studying the dynamic performance of an ultrasonic dental scaler, characterized in that: include: A single-point laser vibrometer (1), a three-degree-of-freedom ultrasonic tooth scaler handle fixture (2) and a tooth surface deposit sample fixture (3), wherein the three-degree-of-freedom ultrasonic tooth scaler handle fixture (2) and the tooth surface deposit sample fixture (3) are both mounted on a support platform and arranged close to each other; the three-degree-of-freedom ultrasonic tooth scaler handle fixture (2) is used to clamp and fix an ultrasonic tooth scaler handle (4), the front end of the ultrasonic tooth scaler handle (4) having an ultrasonic tooth scaler working tip; the tooth surface deposit sample fixture (3) is used to clamp and fix a tooth surface deposit sample, and to squeeze the tooth surface deposit sample and the ultrasonic tooth scaler working tip tightly; the single-point laser vibrometer (1) is mounted on a support frame, focused on the ultrasonic tooth scaler working tip, and is used to measure the ultrasonic vibration of the ultrasonic tooth scaler working tip.

2. The experimental platform for studying the dynamic performance of ultrasonic dental scalers according to claim 1, characterized in that: The three-degree-of-freedom ultrasonic dental scaler handle fixture (2) comprises an XYZ three-degree-of-freedom manual slide (21), a micro-motion rotating platform (22) and a C-type clamp (23); the C-type clamp (23) is mounted on the micro-motion rotating platform (22) and is used to clamp and fix the ultrasonic dental scaler handle (4); the micro-motion rotating platform (22) is mounted on the XYZ three-degree-of-freedom manual slide (21); and the XYZ three-degree-of-freedom manual slide (21) is mounted on a supporting platform.

3. The experimental platform for studying the dynamic performance of ultrasonic dental scalers according to claim 1, characterized in that: The tooth surface deposit sample clamp (3) comprises a flat-nose pliers (31), a spring clamping mechanism and a force sensor (33); the flat-nose pliers (31) are mounted on the spring clamping mechanism and are used to fix the tooth surface deposit sample; the force sensor (33) is connected to the spring clamping mechanism, and the spring clamping mechanism is mounted on a support platform.

4. The experimental platform for studying the dynamic performance of an ultrasonic dental scaler according to claim 3, characterized in that: The spring clamping mechanism comprises a rotating handle (321), a push plate (322), a spring (323), a linear guide rail (324) and a slider (325); one side of the rotating handle (321) is provided with a screw rod; the middle part of the push plate (322) is threadedly slidably connected to the screw rod; the bottom of the push plate (322) is slidably connected to the linear guide rail (324); the linear guide rail (324) is installed on a supporting platform; one end of the spring (323) is connected to the push plate (322); the other end of the spring (323) is connected to a force sensor (33); the force sensor (33) is connected to the slider (325); the bottom of the slider (325) is slidably connected to the linear guide rail (324); and the flat-nose pliers (31) are installed on the slider (325).

5. The experimental platform for studying the dynamic performance of ultrasonic dental scalers according to claim 4, characterized in that: Bosses (326) are arranged at intervals on the support platform, a through hole is provided in the middle of the boss (326), and the screw rod passes through the through hole.

6. The experimental platform for studying the dynamic performance of an ultrasonic dental scaler according to claim 1, characterized in that: The single-point laser vibrometer (1) is a laser Doppler vibrometer.

7. The experimental platform for studying the dynamic performance of an ultrasonic dental scaler according to claim 1, characterized in that: It also comprises a computer, and the single-point laser vibrometer (1) is connected to the computer.

8. A working method of the experimental platform for studying the dynamic performance of an ultrasonic dental scaler according to any one of claims 1 to 7, characterized in that: The steps include: Step 1: Fix the ultrasonic dental scaler handle (4) with a C-shaped clamp (23) on a three-degree-of-freedom ultrasonic dental scaler handle fixture (2); Step 2: Turn on the single-point laser vibrometer (1), adjust the position of the ultrasonic scaler handle (4) by rotating the knob on the three-degree-of-freedom ultrasonic scaler handle fixture (2), and focus the single-point laser vibrometer (1) on the ultrasonic scaler working tip; Step 3: Fix the tooth surface deposit sample with the flat-nose pliers (31) on the tooth surface deposit sample holder (3); then, rotate the rotating handle (321) of the spring rotating mechanism to squeeze the tooth surface deposit and the ultrasonic scaler working tip tightly, and observe the degree of the force sensor (33) to adjust the size of the required simulated lateral pressure; Step 4: Press the pedal of the ultrasonic tooth cleaning machine to start the ultrasonic tooth cleaning machine, collect the vibration data measured by the single-point laser vibrometer (1) through the computer, and export the experimental data on the computer connected to the rear end of the force sensor (33) for subsequent research and analysis.

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