-
公开(公告)号：US20220054079A1
公开(公告)日：2022-02-24
申请号：US17275035
申请日：2019-09-02
摘要： A system (100) for detecting tissue inflammation, gingivitis specifically, including a light emitter (102) configured to emit light at a tissue region within a user's mouth; at least four wavelength-sensitive photodetectors (110, 112, 114, and 116) configured to detect optical signals diffusely reflected through the tissue region, each of the at least four wavelength-sensitive photodetectors comprising a filter (BPF1, BPF2, BPF3, and BPF4) and a photodiode (D1, D2, D3, and D4), where the photodiodes are stacked on top of each other to generate current differential signals for amplifiers corresponding with the photodiodes, wherein the generation of the current differential signals removes an unwanted component from the optical signals prior to amplification; and an inflammation detection unit (136) configured to receive outputs from the corresponding amplifiers and detect inflammation at the tissue region.
-
公开(公告)号：US20200022583A1
公开(公告)日：2020-01-23
申请号：US16495527
申请日：2018-03-20
发明人： Vincent JEANNE , Yekaterina Aleksandrovna BORISENKO , Steven Charles DEANE , Olaf Thomas Johan Antonie VERMEULEN
IPC分类号： A61B5/00
摘要： A method (700) for localizing inflammation within a user's mouth using an oral care device (10), comprising the steps of: (i) emitting (720) light by one or more light emitters (42) of the oral care device; (ii) detecting (730), by a light detector (40) of the oral care device, reflectance from a surface at each of a plurality of locations within the user's mouth to generate reflectance data for each of the plurality of locations; (iii) determining (750), by the controller, for the plurality of locations, whether gingiva at that location is inflamed; and (iv) providing (760), via a user interface (46) of the oral care device, information to the user regarding the inflamed location or locations.
-
公开(公告)号：US20220322954A1
公开(公告)日：2022-10-13
申请号：US17634264
申请日：2020-08-14
摘要： An optical analysis of saliva or a fluid-saliva mixture is performed in order to check whether the saliva or fluid-saliva mixture contains blood, which allows for determining whether or not a person may suffer from gingivitis or another condition affecting gum health. Light received from a representative volume of fluid (23) containing saliva is detected and analyzed. The analysis involves determination of at least one measurement value of light received by a light-receiving unit (25) for only a single wavelength of the light, particularly a wavelength that is associated with high absorption by a constituent of blood. It this respect, it is practical if the light-receiving unit (25) is configured to receive reflected light back from the volume of fluid (23). The optical analysis may be performed real-time during an action in a person's mouth involving a gum agitation effect, or after such action has taken place, for example.
-
公开(公告)号：US20210315459A1
公开(公告)日：2021-10-14
申请号：US17269067
申请日：2019-08-15
摘要： An optical analysis of saliva or a fluid-saliva mix obtained during or after an oral care action is performed in order to check whether the saliva or fluid-saliva mix contains blood, which allows for determining whether or not a person may suffer from gingivitis or another condition affecting gum health. In particular, light received from a representative sample (23) containing saliva is detected and analyzed. The analysis involves determination of measurement values of light received by a light-receiving unit (25) for one or more main wavelengths of the light and one or more auxiliary wavelengths of the light. Advantageously, the main wavelength(s) is/are associated with high hemoglobin absorption and the auxiliary wavelength(s) is/are associated with low hemoglobin absorption. A measurement value at an auxiliary wavelength is used for correcting a measurement value at as main wavelength for background influences.
-
公开(公告)号：US20220054015A1
公开(公告)日：2022-02-24
申请号：US17275216
申请日：2019-09-04
摘要： A tissue inflammation detection system (600) including: a light emitter (602) configured to emit light towards tissue (604); at least one light detector (606) configured to detect diffuse reflective light from the tissue; and a controller (613) including a tissue inflammation detection unit (614) configured to analyze the detected diffuse reflective light in its spectral components. The tissue inflammation detection unit is configured to: determine a tissue contribution from a first wavelength region of a diffuse reflective spectroscopy signal where the diffuse reflective spectroscopy signal is dominated by tissue; extrapolate the tissue contribution to a second wavelength region where the diffuse reflective spectroscopy signal includes at least one detectable hemoglobin absorption feature; subtract the extrapolated tissue contribution from the diffuse reflectance signal; and determine the degree of tissue inflammation.
-
公开(公告)号：US20220031169A1
公开(公告)日：2022-02-03
申请号：US17274921
申请日：2019-09-02
摘要： A system (100) for detecting tissue inflammation, and gingivitis specifically, including a light emitter (102) configured to emit light at a tissue region (104) within a user's mouth; a light detector (106) configured to detect optical signals diffusely reflected through the tissue region over a period of time; a controller (130) configured to: determine a slope signal (Q) based on at least two signals (R(λ1), R(λ2)) from the optical signals, the at least two signals including at least one signal from a hemoglobin-dominated wavelength range; determine one or more characteristics of the slope signal; and select a best measurement signal based on the one or more characteristics of the slope signal. The system further includes a user interface (116) configured to provide information regarding a position of a probe for accurate detection of tissue inflammation based on the one or more characteristics of the slope signal.
-
公开(公告)号：US20220233292A1
公开(公告)日：2022-07-28
申请号：US17611738
申请日：2020-05-13
摘要： There is disclosed a mouthpiece component for use in an intra oral illumination system, the mouthpiece component comprising a core structure which defines at least one waveguide for receiving light which is directable at least partly by the waveguide along at least one light path of the core structure, wherein each at least one light path defines a propagation direction for light in a propagation plane; at least one optical discontinuity which is configured to cause at least a portion of light propagating along the light path in the at least one waveguide to be transmitted out of the at least one core structure and continue to propagate substantially parallel to the propagation plane; and at least one light redirection portion which is configured to redirect at least a portion of light which has been transmitted out of the core structure out of the propagation plane. A method of manufacture thereof is also disclosed.
-
公开(公告)号：US20200261197A1
公开(公告)日：2020-08-20
申请号：US16644529
申请日：2018-09-06
发明人： Nigel David YOUNG , Gertrude Riëtte BAKKER-VAN DER KAMP , Paulus Cornelis DUINEVELD , Olaf Thomas Johan Antonie VERMEULEN , Valentina LAVEZZO , James Donald GWYER , Zeynep SABAH
摘要： The invention relates to a mouthpiece for performing a treatment of teeth such as teeth whitening. Accordingly, the mouthpiece may be arranged for cosmetic treatment. The treatment is based on illumination of the teeth of light with a suitable wavelength. The mouthpiece is designed so that light from light sources, e.g. LED's, is sufficiently homogenized so that the light irradiance at the teeth is sufficiently uniform to achieve good treatment results. Furthermore, the mouthpiece is designed so that the irradiance at the teeth is sufficiently high to achieve efficient treatment and so that heating of the teeth is minimized to an acceptable heating.
-
公开(公告)号：US20170303791A1
公开(公告)日：2017-10-26
申请号：US15513405
申请日：2015-09-11
CPC分类号： A61B5/0088 , A46B9/04 , A46B13/02 , A46B15/0036 , A46B15/004 , A46B15/0044 , A46B15/0046 , A46B2200/1066 , A61B5/0071 , A61B5/0075 , A61B5/4547
摘要： A plaque detection apparatus (70) and method make use of an excitation source (72), a light detector (74) and a controller (76). The excitation source (72) outputs wavelength modulated light (λex) to an evaluation site (80) that has a periodically changing wavelength centered around a wavelength corresponding to a non-linearity in an absorption and/or a fluorescence excitation spectrum for a chosen plaque. The chosen plaque exhibits spectral characteristics different from non-chosen plaque and/or interfering species. The light detector (74) detects light (λsite) (84) received from the evaluation site (80), including site reflected light (λrefl) and/or site emitted light (λem). The controller (76) operatively couples to the excitation source (72) and the light detector (74) for controlling the excitation source to output the wavelength modulated light and detecting plaque as a function of the detected light (λsite) and at least one higher harmonic of the wavelength modulation frequency.
-
-
-
-
-
-
-
-
搜索结果
9 条记录 (耗时 0.016 秒)
