TW202319028A - Gingivitis evaluation device - Google Patents

Abstract

A gingivitis evaluation device comprises a main unit, at least one detection unit, and a processing unit. Said detection unit includes a sensing probe, a pair of transmitting fiber which is embedded in said sensing probe, a receive fiber which is embedded in said sensing probe, a lamps, and a spectrometer. Said lamps is configured to emit a light source towards the gums and said spectrometer receive the light signal reflected by the gums, so as to obtain its spectral information. Said processing unit includes an analysis module which is configured to analyze the spectral information and obtain the changes in the blood oxygen level of the gums based on said spectral information. In order to improve the detection accuracy, any two adjacent of said transmitting fiber and said receive fiber have a axis spacing which is less than 1.0mm, so that the diffuse reflction range of the light is controlled to be irradiated on the gums.

Description

Gingivitis detection device

The invention relates to a detection device, in particular to a detection device for gingivitis.

Gingivitis is an early symptom of periodontal disease. The cause is that the teeth are not cleaned properly, resulting in long-term accumulation of dental plaque on the edges of the gums and adjacent surfaces of the teeth. The bacteria in the dental plaque will secrete toxins to stimulate the gums, leading to inflammation of the gums. If the inflammation occurs Continued, and may further deteriorate into severe periodontitis.

There is a circular sulcus at the junction of teeth and gums called gingival sulcus. When periodontal disease causes damage, the gingival sulcus will become deeper, which is called periodontal pocket. At present, gingivitis is mainly detected by contact with periodontal probes. The most widely used periodontal probes are Michigan O-type (Michigan O) probes. The scale of 10, the dentist will insert the tip of the probe into the patient's gingival sulcus, and measure the depth of the gingival sulcus through the scale. The depth of the healthy gingival sulcus is generally 1 to 3 mm. When the depth is greater than 3 mm, it means that the teeth have formed. Periodontal pocket, the deeper the depth, the more serious the periodontal damage. However, this type of probe needs to go deep into the gingival sulcus and read the scale during operation. Not only is the operation time-consuming and often makes the patient uncomfortable, but there may also be errors in the visual scale reading method, and the accuracy needs to be improved.

Therefore, the object of the present invention is to provide a gingivitis detection device with a low degree of intrusion and high judgment accuracy.

Therefore, the gingivitis detection device of the present invention includes a main body unit, at least one detection unit disposed in the main body unit, and a processing unit disposed in the main body unit. The at least one detection unit includes a sensing probe, two transmitting optical fibers embedded in the sensing probe, a receiving optical fiber embedded in the sensing probe, and a sensor for generating a wavelength range covering 400-800 nanometers. A light source for the light source, and a pair of spectrometers that should receive the optical fiber setup. The axial center distance between any two adjacent ones of the transmitting optical fiber and the receiving optical fiber is less than 1mm, and the light source generated by the light source is output through the transmitting optical fiber, and is diffusely reflected on the gums and transported to the receiving optical fiber through the receiving optical fiber. A spectrometer, enabling the spectrometer to obtain spectral information after diffuse reflection.

The processing unit includes an analysis module for analyzing the spectral information received by the spectrometer. The analysis module can obtain the change of the oxygen content of the gingival blood according to the spectral information, and finally obtain the health status of the gums according to the change of the oxygen content of the gingival blood. .

The effect of the present invention is that: when the gums are inflamed or damaged, the blood vessels of the gums and the oxygen content in the blood will all change. The present invention calculates the inflammation of the patient's gums by obtaining the changes in the oxygen content in the blood of the patient's gums. When measuring, you only need to lightly touch the gums with the sensing probe, which can greatly reduce the discomfort of the patient. The design of the axial center distance between any two adjacent optical fibers of the transmitting optical fiber and the receiving optical fiber is less than 1.0mm, which can limit the output of the light source. The final diffuse reflection range, so that the diffuse reflection range is controlled near the gums, improving the accuracy of detection.

Referring to Fig. 1, Fig. 2, and Fig. 3, one embodiment of the gingivitis detection device of the present invention includes a main body unit 1, a detection unit 2 arranged in the main body unit 1, and a detection unit 2 arranged in the main body unit 1 processing unit 3. The main unit 1 includes a main casing 11, a display 12 embedded in the main casing 11 and exposed to the outside, a warning light 13 arranged on the main casing 11, and a warning light 13 arranged on the main casing. The operation interface 14 on the body 11. The warning light 13 can also be combined with the display 12, so that the warning light 13 is only displayed when the display 12 is turned on. The operation interface 14 can be a physical button, or a touch interface combined with the display 12 . The detection unit 2 includes a sensing probe 21 arranged in the main housing 11 and protruding from the main housing 11 at the front end, two transmitting optical fibers 22 embedded in the sensing probe 21 parallel to each other, a A receiving optical fiber 23 embedded in the sensing probe 21 and parallel to the sending optical fibers 22, a light source 24 arranged in the main housing 11 and behind the sending optical fibers 22, a light source 24 arranged in the main housing A spectrometer 25 inside the body 11 and behind the receiving optical fiber 23 , and two pressure sensors 26 arranged inside the sensing probe 21 .

The sensing probe 21 has a base portion 211 fixed in the main housing 11 for the pressure sensors 26 to be embedded, and a base portion 211 extending forward and passing through the main housing. 11 of the probe portion 212 . The diameter of the front end of the probe part 212 is 2 mm. This size design makes it easier for the probe part 212 to touch the gingival junction accurately, improving the measurement accuracy. The transmitting optical fibers 22 pass through the base portion 211 and the probe portion 212 along the front-rear direction, and are arranged with the receiving optical fibers 23 along the radial direction of the sensing probe 21 . The distance between the axes of any two adjacent ones of the transmitting optical fiber 22 and the receiving optical fiber 23 is within 1 mm, preferably 0.46 mm. It should be noted that the distance between the centers of axes referred to here is the shortest distance between the central axes of the transmitting optical fibers 22 and the receiving optical fibers 23 . In this embodiment, the diameter of each transmitting optical fiber 22 and each receiving optical fiber 23 can be 100-600 μm, and after considering the tightness of the sensing probe 21 and the gums, the preferred design is that the transmitting The diameter of the optical fiber 22 is 100-300 μm, the diameter of the receiving optical fiber 23 is 300-500 μm, and the present embodiment adopts the transmitting optical fiber 22 with a diameter of 200 μm and the receiving optical fiber with a diameter of 400 μm to achieve the best transceiver effect, and Make the sensing probe 21 have an ideal size. The light source 24 is located behind the base portion 211 and has two light emitting modules 241 respectively aligned with the transmitting optical fibers 22 . Each light emitting module 241 can be a halogen lamp or a light emitting diode, and can generate a light source with a wavelength range of 400-800 nm. The processing unit 3 includes an analysis module 31 connected to the spectrometer 25 and the display 12 , and a warning module 32 connected to the pressure sensors 26 and the warning light 13 .

Referring to Fig. 2, Fig. 3, and Fig. 4, the detection process of this embodiment is described as follows: first, the measurer holds the main housing 11, and gently touches the probe part 212 to the gum A of the patient. Excessive force applied against the gum A will squeeze the blood vessel B of the gum A and affect the accuracy of interpretation. Therefore, the pressure sensors 26 will detect whether the pressure exceeds the standard value (less than or equal to 10N, preferably 5N ), if the standard value is exceeded, the warning module 32 will issue a warning through the warning light 13 to ensure the accuracy of the measurement. In addition to issuing a warning through the warning light 13, it can also be further designed to make the light source 24 light, or not display the detection result on the display 12. After touching the gum A lightly with a suitable force, the light emitting modules 241 will generate light sources in sequence. First, the light emitting module 241 on the right in FIG. The diffuse reflection generated on A will be sent to the spectrometer 25 through the receiving optical fiber 23, so that the spectrometer 25 can obtain the spectral information for the first time, and then switch to the light emitting module 241 on the left in Fig. Corresponding to the output of the sending optical fiber 22 towards the gum A, the diffuse reflection on the gum A will be sent to the spectrometer 25 through the receiving optical fiber 23, so that the spectrometer 25 can obtain the second spectral information. The analysis module 31 can obtain the change of the blood oxygen content in the blood vessel B of the gum A according to the analysis module 31 of the spectral information received by the spectrometer 25, and finally obtain the health status of the gum according to the change of the blood oxygen content of the gum A, and displayed on the display 12. It should be noted that, when the distance between the axes of any two neighbors of the transmitting optical fiber 22 and the receiving optical fiber 23 is 0.46mm, the diffuse reflection range after the light source is emitted can be limited, and then the diffuse reflection range can be controlled within the gum A Nearby, the accuracy of detection is improved, and at the same time, the wall surface used to separate the sending optical fibers 22 in the main housing 11 can be prevented from being too thin, so as to take into account the strength of the main housing 11 .

Referring to Fig. 3, Fig. 5, and Fig. 6, further, the analysis module 31 will judge the gingival index (GI value for short) through the variation of gingival blood oxygen content in the characteristic bands 545nm and 575nm in the spectral information, For example, Figure 5 and Figure 6 are two graphs showing the relationship between the intensity of oxygen content in gingival blood and the wavelength. The curves in Figure 5 in the characteristic bands of 545nm and 575nm are relatively smooth, which represents a lower gingival index (such as 0~ 1), while the curves in the characteristic bands of 545nm and 575nm in Figure 6 have more drastic changes, which means that the gingival index is higher and there may be more severe gingivitis (such as 1~3). Through this interpretation method, the specific information in the spectral information can be accurately locked for interpretation, and the analysis speed and detection accuracy can be improved.

Referring to Fig. 7, the present embodiment may also include two detection units 2. When designing such a configuration, it is necessary to ensure that the sensing probes 21 maintain a sufficient distance so that the sensing probes 21 can accurately touch the patient. Two adjacent gingiva A. The aspect in Fig. 7 can measure two gums A at one time, improving the detection speed. Of course, the number of the detection units 2 can also be other numbers, and the main consideration in design is that the sensing probes 21 can accurately touch the gum A.

To sum up, the detection method of the present invention is relatively comfortable and can avoid too much interference from human factors. The design of the axial center distance between any two neighbors of the transmitting optical fiber 22 and the receiving optical fiber 23 can control the range of diffuse reflection of the light source. On the target gingiva A, the detection accuracy is improved. The analysis module 31 can judge the gingival index by including the changes in the gingival blood oxygen content of the characteristic bands 545nm and 575nm, which can reduce the interpretation time and improve the detection efficiency, so it can indeed achieve the present invention. purpose.

But what is described above is only an embodiment of the present invention, and should not limit the scope of the present invention. All simple equivalent changes and modifications made according to the patent scope of the present invention and the content of the patent specification are still within the scope of the present invention. Within the scope covered by the patent of the present invention.

1: Main unit 11: Main housing 12: Display 13: warning lights 14: Operation interface 2: Detection unit 21: Sensing connector 211: base part 212: probe part 22: Sending fiber 23: Receiving optical fiber 24: light source 241: Lighting module 25: Spectrometer 26: Pressure sensor 3: Processing unit 31: Analysis module 32:Warning module A: Gums B: blood vessel

Other features and effects of the present invention will be clearly presented in the implementation manner with reference to the drawings, wherein: Fig. 1 is an incomplete bottom view, illustrating one embodiment of the gingivitis detection device of the present invention; Fig. 2 is an incomplete perspective view, further illustrating the partial three-dimensional appearance of this embodiment, in order to illustrate the internal structure, one of the main casings of this embodiment is represented by phantom lines; Fig. 3 is a schematic diagram illustrating the connection relationship of each element of this embodiment; Fig. 4 is a perspective view, illustrating the implementation aspect when this embodiment detects; Fig. 5 and Fig. 6 are all graphs, illustrate the intensity and the wavelength variation diagram that draw after the detection of this embodiment; And Fig. 7 is a perspective view illustrating another aspect of the embodiment.

1: Main unit

11: Main housing

12: Display

13: warning lights

2: Detection unit

21: Sensing connector

211: base part

212: probe part

26: Pressure sensor

Claims (10)

A gingivitis detection device, comprising: a main unit; At least one detection unit is arranged in the main unit, and includes a sensing probe, two transmitting optical fibers embedded in the sensing probe, a receiving optical fiber embedded in the sensing probe, and a A light source covering a light source of 400-800 nanometers, and a pair of spectrometers that should be equipped with receiving optical fibers. The distance between the axes of any two adjacent optical fibers between the transmitting optical fibers and the receiving optical fibers is less than 1mm. The light source produced by the light source output through the sending optical fibers, and transmit to the spectrometer through the receiving optical fiber after diffuse reflection on the gums, so that the spectrometer can obtain spectral information after diffuse reflection; and A processing unit is arranged in the main unit and includes an analysis module for analyzing the spectral information received by the spectrometer. The analysis module can obtain the change of the oxygen content of the gingival blood according to the spectral information, and finally according to the gingival blood Changes in oxygen levels provide information on the health of the gums. The device for detecting gingivitis according to claim 1, wherein the transmitting optical fibers and the receiving optical fibers of the at least one detection unit are arranged radially of the sensing probe, and any two of the transmitting optical fibers and the receiving optical fibers The distance between the adjacent axes is less than 0.5mm. The gingivitis detection device according to claim 1, wherein the diameter of each transmitting optical fiber of the at least one detecting unit is 100-300 μm, and the diameter of the receiving optical fiber is 300-500 μm. The gingivitis detection device according to claim 1, wherein the analysis module of the processing unit judges the degree of gingival inflammation or the gingival index through the characteristic wavebands of 535-555nm and 565-585nm. The gingivitis detection device according to Claim 1, wherein the diameter of the front end of the sensing probe is less than or equal to 2mm. The gingivitis detection device as claimed in claim 4, wherein the main body unit includes a main casing, and a display embedded in the main casing and used for displaying the analysis results of the analysis module. The gingivitis detection device according to claim 1, wherein the light source of the at least one detection unit has two light emitting modules respectively aligned with the transmitting optical fibers, and the light emitting modules are halogen lamps or light emitting diodes. The gingivitis detection device according to claim 1, wherein the processing unit further includes a warning module set in the main body unit, and the at least one detection unit also includes at least one set in the sensing probe and connected to the signal The pressure sensor of the warning module, when the pressure sensor detects that the pressure exceeds a standard value, will make the warning module issue a warning. The gingivitis detection device according to Claim 8, wherein the standard value of the pressure sensor of the at least one detection unit is less than or equal to 10N. The gingivitis detection device as described in Claim 8, wherein the main body unit includes a main housing, and the sensing probe of the at least one detection unit has a sensor probe fixed in the main housing for embedding the pressure sensors. The base part, and a probe part extending forward from the base part and passing through the main housing, the light source and the spectrometer are located behind the base part, the sending optical fiber and the receiving optical fiber run through the base The diameter of the front end of the seat part and the probe part is less than or equal to 2 mm.

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