Oral health monitoring device

Abstract

In one aspect, an apparatus for imaging an oral cavity is disclosed. The device includes a head having a base portion, first and second wing structures, and first and second image sensors, and an elongate body. First and second image sensors are mounted to the first and second wing structures and enable imaging of the user's oral cavity. The wing structure enables simultaneous imaging of multiple tooth surfaces, and may facilitate positioning of the head of the device.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of priority to U.S. Provisional Application No. 63 / 408,646, filed on September 21, 2022, the contents of which are hereby incorporated by reference in their entirety. Background Art

[0003] Oral health monitoring is a key aspect of maintaining long-term oral health. Currently, most oral health monitoring is accomplished via examination by an oral health professional, such as a dentist or hygienist. However, these examinations are typically limited to visual inspection using only a mirror, and do not allow for clear imaging of all oral surfaces. Improvements have been made in the field of optical and x-ray imaging, allowing for imaging of larger portions of a user's teeth. However, many current imaging devices have the disadvantage of requiring a high degree of skill to effectively image a patient's oral cavity. In addition, current devices are typically time consuming to operate and cannot be used by patients. Therefore, there is a need to develop improved imaging systems that more effectively image a patient's oral cavity while reducing the required skill level. Summary of the invention

[0004] The present invention relates to an apparatus for imaging the oral cavity of a patient to monitor oral health.

[0005] In one aspect, a device for oral health monitoring includes an elongated body extending along a longitudinal axis and a head coupled to the elongated body. The head has a base portion coupled to the elongated body. The head also has a first wing structure and a second wing structure extending from the base portion. In addition, the head has a first image sensor coupled to the first wing structure, the first image sensor having a first sensing axis perpendicular to an imaging surface of the first imaging sensor. The head also has a second image sensor coupled to the second wing structure, the second image sensor having a second sensing axis perpendicular to an imaging surface of the second imaging sensor. The first sensing axis of the first image sensor intersects with the second sensing axis of the second image sensor.

[0006] In another aspect, a device for oral health monitoring includes an elongated body extending along a longitudinal axis and a head coupled to the elongated body. The head has a base portion coupled to the elongated body. The head also has a first wing structure and a second wing structure extending from the base portion. The first wing structure has an inner surface, and the second wing structure has an inner surface. In addition, the head has a first image sensor coupled to the first wing structure and a second image sensor coupled to the second wing structure. The inner surfaces of the first wing structure and the second wing structure are non-parallel.

[0007] In yet another aspect, a device for oral health monitoring includes an elongated body extending along a longitudinal axis and a head coupled to the elongated body. The head has a base portion coupled to the elongated body. The head also has a first wing structure and a second wing structure extending from the base portion. The first wing structure and the second wing structure each have an inner surface. In addition, the head has a first image sensor coupled to the first wing structure and a second image sensor coupled to the second wing structure. A tooth guide extends from the base portion, the tooth guide being configured to engage a user's teeth and separate the base portion relative to the user's teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The present invention will become more fully understood based on the detailed description and accompanying drawings, in which:

[0009] Figure 1 is a perspective view of an oral health monitoring device.

[0010] Figure 2 yes Figure 1 A perspective view of a portion of an oral health monitoring device.

[0011] Figure 3 A front view of a portion of an oral health monitoring device.

[0012] Figure 4 A rear view of a portion of an oral health monitoring device.

[0013] Figure 5 A left side view of a portion of an oral health monitoring device.

[0014] Figure 6 is a right side view of a portion of an oral health monitoring device.

[0015] Figure 7 is a top view of a portion of an oral health monitoring device.

[0016] Figure 8 A bottom view of a portion of an oral health monitoring device.

[0017] Fig. 9 is part of an oral health monitoring device Figure 3 A cross-sectional view taken along line IX-IX.

[0018] Fig.10 It can be used for Figure 1 An oral health monitoring device is a perspective view of a second embodiment of a portion of an oral health monitoring device.

[0019] Fig.11 A front view of a portion of an oral health monitoring device.

[0020] Fig.12A rear view of a portion of an oral health monitoring device.

[0021] Fig.13 A left side view of a portion of an oral health monitoring device.

[0022] Fig.14 is a right side view of a portion of an oral health monitoring device.

[0023] Fig.15 is a top view of a portion of an oral health monitoring device.

[0024] Fig.16 A bottom view of a portion of an oral health monitoring device.

[0025] Fig.17 is part of an oral health monitoring device Fig.11 A cross-sectional view taken along line XVII-XVII.

[0026] Fig.18 It can be used for Figure 1 An oral health monitoring device is a front view of a third embodiment of a portion of an oral health monitoring device.

[0027] Fig.19 is a right side view of a portion of an oral health monitoring device.

[0028] Fig. 20 is a top view of a portion of an oral health monitoring device.

[0029] Fig.21 It can be used for Figure 1 An oral health monitoring device is a perspective view of a fourth embodiment of a portion of an oral health monitoring device.

[0030] Fig. 22 It can be used for Figure 1 An oral health monitoring device is a top view of a fifth embodiment of a portion of an oral health monitoring device.

[0031] Fig.23A is a perspective view of a sixth embodiment of an oral health monitoring device.

[0032] Fig. 23B is an upper right perspective view of the head portion of the oral health monitoring device with the cover omitted.

[0033] Fig.23C is an upper left perspective view of the head portion of the oral health monitoring device with the cover omitted.

[0034] Fig.24 is a cross-sectional view of the oral health monitoring device taken along line XXIVA-XXIVA of FIG. 23 .

[0035] Fig.25 is a front view of the oral health monitoring device of FIG. 23 .

[0036] Fig.26 23 is a left side view of the oral health monitoring device.

[0037] Fig. 27 is a rear view of the oral health monitoring device of FIG. 23 .

[0038] Fig.28 is a top view of the oral health monitoring device of FIG. 23 .

[0039] Fig.29A is a perspective view of a portion of an oral health monitoring device without a cover.

[0040] Fig.29B is a perspective view of a portion of an oral health monitoring device having a first cover.

[0041] Fig.29C is a perspective view of a portion of an oral health monitoring device having a first cover.

[0042] Fig.30 is a perspective view of a cover of the sixth embodiment of the oral health monitoring device of FIG. 23 .

[0043] Fig.31 yes Fig.30 A lower rear perspective view of the cover.

[0044] Fig.32 yes Fig.30 Front view of the hood.

[0045] Fig.33 yes Fig.30 Rear view of the hood.

[0046] Fig.34 yes Fig.30 Right side view of the cover.

[0047] Fig.35 yes Fig.30 Left side view of the hood.

[0048] Fig.36 yes Fig.30 A top view of the cover.

[0049] Fig.37 yes Fig.30 Bottom view of the cover.

[0050] Fig.38 yes Fig.30 The cover edge Fig.32 A cross-sectional view taken along line XXX-XXX. DETAILED DESCRIPTION

[0051] The following description of the preferred embodiment(s) is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.

[0052] The description of the illustrative embodiments according to the principles of the present invention is intended to be read in conjunction with the accompanying drawings, which are considered as part of the entire written description. In the description of the embodiments of the present invention disclosed herein, any reference to direction or orientation is intended only for convenience of description and is not intended to limit the scope of the present invention in any way. Relative terms, such as "lower", "upper", "horizontal", "vertical", "above", "below", "up", "down", "top" and "bottom" and their derivatives (e.g., "horizontally", "downward", "upward", etc.) should be understood to refer to the orientation described subsequently or shown in the accompanying drawings discussed. These relative terms are only for the convenience of description, unless explicitly stated otherwise, the device is not required to be constructed or operated in a specific orientation. Unless otherwise clearly described, terms such as "attachment", "attachment", "connection", "connection", "interconnection" and similar words refer to the relationship in which structures are fixed or attached to each other or directly or indirectly through an intermediate structure, and the attachment or relationship in which both are removable or fixed. In addition, the features and benefits of the present invention are described by reference to exemplary embodiments. Therefore, the invention expressly should not be limited to such exemplary embodiments showing some possible non-limiting combinations of features that may exist alone or in other combinations of features; the scope of the invention being defined by the appended claims.

[0053] As used throughout, ranges are used as shorthand for describing individual values ​​and each value within a range. Any value within a range can be selected as the endpoint of the range. In addition, all references cited herein are hereby incorporated by reference in their entirety. In the event of a conflict between a definition in the present disclosure and a definition of a cited reference, the present disclosure shall prevail.

[0054] The invention described herein relates to an oral health monitoring device configured to image the patient's oral cavity. In some embodiments, the oral health monitoring device is configured to image the patient's teeth and gums. In yet other embodiments, the oral health monitoring device utilizes visible light and images a portion of the teeth and surrounding gum tissue substantially simultaneously. Optionally, the visible light can be white light. In other embodiments, the oral health monitoring device utilizes UV light (approximately 350nm to 400nm wavelength) and images a portion of the teeth and surrounding gum tissue substantially simultaneously in a fluorescence mode. White light and UV light sources can be used to sequentially illuminate the oral surface for alternating image frames. In another embodiment, the user can complete a full-mouth scan of white light and then switch to a UV light source for a second scan in fluorescence mode. Preferably, the device utilizes one or more image sensors and features that assist the image sensor in positioning relative to the teeth and gums.

[0055] Reference Figure 1 , an oral health monitoring device 100 is shown according to one embodiment of the present invention. In an exemplary embodiment, the device 100 generally has a body 110 and a scanning head 120 detachably coupled to the body 110. More specifically, the body 110 has a handle portion 106 configured to be grasped and operated by a user. The scanning head 120 has an elongated body 104 and a head 102. The scanning head 120 can be detachably coupled to the body 110 using a friction / interference fit or via a mechanical interaction, for example, the scanning head 120 has a protrusion or recess that matches a recess or protrusion on the body 110. Various techniques are known for coupling the scanning head 120 of the toothbrush 100 to the body 110, and various techniques (i.e., magnetic, mechanical, interference, threaded, protrusion / detent, etc.) can be used according to the invention described herein. The scanning head 120 and the body 110 are generally shown, and the present invention is not limited by the shape, size and / or geometry of these components. Optionally, the scanning head 120 and the main body 110 may be integrally manufactured such that the scanning head 120 is non-detachably coupled to the main body 110 .

[0056] Figures 2 to 9 The scanning head 120 of the device 100 is shown. As described above, the scanning head 120 has an elongated body 104 and a head 102. The elongated body 104 extends along the longitudinal axis AA. A central plane CP extends through the head 102, the central plane CP being defined by the longitudinal axis AA and extending perpendicularly to the front surface 112 of the base portion 114 of the head 102.

[0057] The base portion 114 also has a rear surface 116 opposite to the front surface 112. The first wing structure 132 and the second wing structure 142 extend from the base portion 114. In this embodiment, the first wing structure 132 and the second wing structure 142 can be symmetrical about the center plane CP. In other words, the first wing structure 132 and the second wing structure 142 are mirror images about the center plane CP. In other embodiments, the first wing structure 132 and the second wing structure 142 can be asymmetrical about the center plane CP.

[0058] The base portion 114 is directly coupled to the elongated body 104. The base portion 114 serves as a central structural feature from which the first wing structure 132 and the second wing structure 142 extend. The first image sensor 152 is coupled to the inner surface 134 of the first wing structure 132. The second image sensor 162 is coupled to the inner surface 144 of the second wing structure 142. The first image sensor 152 and the second image sensor 162 are image sensors configured to image visible light. In other embodiments, the first image sensor and the second image sensor can be sensitive to X-rays, infrared light, UV light, or any other frequency band useful for monitoring oral health.

[0059] The first image sensor 152 and the second image sensor 162 each have an imaging surface 154, 164. The imaging surfaces 154, 164 may be planar, or may be convex or concave. Optionally, the imaging surfaces 154, 164 may be lenses or protective windows covering the first image sensor 152 and the second image sensor 162. The first sensing axis L1-L1 is perpendicular to the imaging surface 154 of the first image sensor 152. The second sensing axis L2-L2 is perpendicular to the imaging surface 164 of the second image sensor 162. In the case where the imaging surfaces 154, 164 are concave or convex, the first sensing axis L1-L1 and the second sensing axis L2-L2 are perpendicular to a plane tangent to the imaging surfaces 154, 164 at a minimum point or a maximum point (applicable depending on whether the curved portion is concave or convex). The first sensing axis L1-L1 intersects with the second sensing axis L2-L2. The first sensing axis L1-L1 intersects with the second sensing axis L2-L2 at the center plane CP.

[0060] The base portion 114 may also have a cavity 118 that is recessed relative to the front surface 112 of the base portion 114. Optionally, the first image sensor 152 and the second image sensor 162 may be partially located within the cavity 118. The image sensors 152, 162 may be mounted such that they are coupled to both the inner surface 134 of the first wing structure 132 and the inner surface 144 of the second wing structure 142 and also to the inner surface 119 of the cavity 118. In alternative embodiments, the first image sensor 152 and the second image sensor 162 may be coupled only to the inner surface 134 of the first wing structure 132 and the inner surface 144 of the second wing structure 142, or may be coupled only to the inner surface 119 of the cavity 118. Optionally, the image sensors 152 , 162 may be recessed on the interior surfaces 134 , 144 , or the image sensors 152 , 162 may be flush mounted with or protrude from the interior surface 134 of the first image sensor 152 and the interior surface 144 of the second image sensor 162 .

[0061] The base portion 114 includes a tooth guide 122. The tooth guide 122 is located on the opposite side of the cavity 118 and extends from the front surface 112 of the base portion 114. Optionally, the tooth guide 122 can form a portion of the front surface 112. The tooth guide 122 is configured to engage the user's teeth and maintain the spacing between the user's teeth and the first image sensor 152 and the second image sensor 162. The desired spacing between the user's teeth and the first image sensor 152 and the second image sensor 162 can be selected to ensure that the first image sensor 152 and the second image sensor 162 are positioned at the appropriate focal length. Optionally, the first wing structure 132 and the second wing structure 142 can also be used in place of the tooth guide 122 to maintain the desired spacing. It is also contemplated that the first image sensor 152 and the second image sensor 162 can also contact the user's oral tissue and maintain the desired spacing. Therefore, the shape of the image sensors 152, 162 can be changed to ensure that the desired spacing is achieved. Optionally, the tooth guide 122 can be omitted. Optionally, one or more than two tooth guides 122 may be used. In yet other optional configurations, the tooth guide 122 may include a notch to receive the tip of an incisor. This may help center the scanning head 120 during use.

[0062] The tooth guide 122 may be symmetrical about the center plane CP, or may be asymmetrical about the center plane CP. Optionally, the tooth guide 122 extends along the center plane CP. In the present embodiment, the inner surface 134 of the first wing structure 132 and the inner surface 144 of the second wing structure 142 may be non-parallel. In other embodiments, the inner surfaces 134, 144 may be parallel. The inner surfaces 134, 144 are symmetrical about the center plane CP, but in other embodiments, the inner surfaces 134, 144 may be asymmetrical about the center plane CP. When viewed from the top or bottom of the scanning head 120, the base portion 114 and the first wing structure 132 and the second wing structure 142 form a tooth channel 124 configured to receive one or more teeth of the user. The tooth channel 124 has a U-shaped cross-section.

[0063] Optionally, the tooth guide 122 and the wing structures 132, 142 may be at least partially formed of a soft material such as an elastomer to provide a comfortable interface between the scanning head 120 and the user's teeth and gums. Optionally, the soft material may be a thermoplastic elastomer ("thermoplastic elastomer, TPE"), which may form the entirety of the tooth guide 122 or the wing structures 132, 142. In yet other configurations, the soft material may be used to form only a portion of the tooth guide 122 or the wing structures 132, 142.

[0064] The first image sensor 152 and the second image sensor 162 may include a light to illuminate the oral tissue of the user. Optionally, the light may be a ring light that forms a perimeter of the first image sensor 152 and the second image sensor 162. In other configurations, the light may be embedded in the wing structures 132, 142 and physically separated from the rest of the first image sensor 152 and the second image sensor 162. Optionally, the light may be an LED (light emitting diode) that may be mounted directly on the wing structures 132, 142, or may be embedded with a light pipe or light guide for directing light from the LED to the oral tissue of the user. The light or light guide may also include a diffuser that may be embedded within the wing structures 132, 142.

[0065] Go to Figures 10 to 17 , showing a second embodiment of the scanning head 220. The scanning head 220 can be used with Figure 1 The scanning head 220 can be used with the body 110 shown, or can be formed with an integral handle as desired. The scanning head 220 has an elongated body 204 and a head 202. The elongated body 204 extends along the longitudinal axis AA. A center plane CP extends through the head 202, the center plane CP being defined by the longitudinal axis AA and extending perpendicular to the front surface 212 of the base portion 214 of the head 202.

[0066] The base portion 214 also has a rear surface 216 opposite the front surface 212. A first wing structure 232 and a second wing structure 242 extend from the base portion 214. In this embodiment, the first wing structure 232 can be symmetrical about the center plane CP, and the second wing structure 242 can also be symmetrical about the center plane CP. In other words, the first wing structure 232 and the second wing structure 242 each extend from the front surface 212 of the base portion 214 and extend transversely relative to the center plane CP and the longitudinal axis AA. The first wing structure 232 extends substantially perpendicular to the longitudinal axis AA, while the second wing structure 242 extends at an oblique angle to the longitudinal axis.

[0067] The base portion 214 is directly coupled to the elongated body 204. The base portion 214 serves as a central structural feature from which the first wing structure 232 and the second wing structure 242 extend. The first image sensor 252 is coupled to the inner surface 234 of the first wing structure 232. The second image sensor 262 is coupled to the inner surface 244 of the second wing structure 242. The first image sensor 252 and the second image sensor 262 are image sensors configured to image visible light. In other embodiments, the first image sensor and the second image sensor may be sensitive to X-rays, infrared light, UV light, or any other frequency band useful for monitoring oral health. Optionally, the first image sensor 252 and the second image sensor 262 may be recessed in the inner surfaces 234, 244 of the first wing structure 232 and the second wing structure 242.

[0068] The first image sensor 252 and the second image sensor 262 each have an imaging surface 254, 264. The imaging surfaces 254, 264 may be planar, or may be convex or concave. The first sensing axis L1-L1 is perpendicular to the imaging surface 254 of the first image sensor 252. The second sensing axis L2-L2 is perpendicular to the imaging surface 264 of the second image sensor 262. In the case where the imaging surfaces 254, 264 are concave or convex, the first sensing axis L1-L1 and the second sensing axis L2-L2 are perpendicular to a plane tangent to the imaging surfaces 254, 264 at a minimum point or a maximum point (applicable depending on whether the curved portion is concave or convex). The first sensing axis L1-L1 intersects the second sensing axis L2-L2. The first sensing axis L1-L1 and the second sensing axis L2-L2 extend along a central plane CP. Optionally, the first sensing axis L1-L1 may be parallel to the longitudinal axis AA.

[0069] The first sensing axis L1-L1 and the second sensing axis L2-L2 may intersect at 90 degrees. In other embodiments, the first sensing axis L1-L1 and the second sensing axis L2-L2 may intersect at less than or greater than 90 degrees. Preferably, the first sensing axis and the second sensing axis may intersect at 60 to 120 degrees. Similarly, the imaging surfaces 254, 264 may also be arranged so that they extend from the base portion 214 and are at an angle of 0 to 10 degrees relative to each other. Optionally, the imaging surfaces 254, 264 may extend from the base portion 214 so that they are closer together as the distance from the base portion 214 increases. In other embodiments, the imaging surfaces 254, 264 may be further separated as the distance from the base portion 214 increases. In those embodiments, the imaging surfaces 254, 264 may be angled at 20 to 90 degrees.

[0070] The base portion 214 may also have a cavity 218 that is recessed relative to the front surface 212 of the base portion 214. Optionally, the first image sensor 252 and the second image sensor 262 may be partially located within the cavity 218. One or both of the image sensors 252, 262 may be mounted so that they are coupled to both the inner surface 234 of the first wing structure 232 and the inner surface 244 of the second wing structure 242 and also to the inner surface 219 of the cavity 218. In alternative embodiments, the first image sensor 252 and the second image sensor 262 may be coupled only to the inner surface 234 of the first wing structure 232 and the inner surface 244 of the second wing structure 242, or may be coupled only to the inner surface 219 of the cavity 218. Optionally, the image sensors 252 , 262 may be recessed on the inner surfaces 234 , 244 , or the image sensors 252 , 262 may be flush mounted with or protrude from the inner surface 234 of the first image sensor 252 and the inner surface 244 of the second image sensor 262 .

[0071] The base portion 214 includes a tooth guide 222. The tooth guide 222 is located on the opposite side of the cavity 218 and extends from the front surface 212 of the base portion 214. Optionally, the tooth guide 222 can form a part of the front surface 212. The tooth guide 222 is configured to engage the user's teeth and maintain a spacing between the user's teeth and the first image sensor 252 and the second image sensor 262. The desired spacing between the user's teeth and the first image sensor 252 and the second image sensor 262 can be selected to ensure that the first image sensor 252 and the second image sensor 262 are positioned at an appropriate focal distance. Optionally, the first wing structure 232 and the second wing structure 242 can also be used in place of the tooth guide 222 to maintain the desired spacing. Optionally, the tooth guide 222 can be omitted. Optionally, one or more than two tooth guides 222 can be used.

[0072] The tooth guide 222 can extend along the center plane CP and extend transversely to the center plane CP. In this embodiment, the inner surface 234 of the first wing structure 232 and the inner surface 244 of the second wing structure 242 can be non-parallel. Optionally, the inner surface 234 can be perpendicular to the longitudinal axis AA and perpendicular to the center plane CP. In other embodiments, the inner surfaces 234, 244 can be parallel. When viewed from the top or bottom of the scanning head 220, the base portion 214 and the first wing structure 232 and the second wing structure 242 form a tooth channel 224 configured to receive one or more teeth of the user.

[0073] During use, the scanning head 220 can be configured to take a series of images as the user moves the scanning head 220 along the teeth. These images can be stitched together using image processing techniques to provide a view of all surfaces of the user's teeth and optionally a portion of the adjacent gums. The stitching can be performed by any known technique. It is also contemplated that stitching can be performed using images obtained at different times, thereby being able to stitch together images that capture a plurality of the user's teeth. A plurality of images can also be used to capture the teeth from various perspectives, thereby creating a 3D model of the user's teeth.

[0074] Go to Figures 18 to 20 , showing a third embodiment of the scanning head 320. The scanning head 320 can be used with Figure 1 The scanning head 320 can be used with the body 110 shown, or can be formed with an integral handle as desired. The scanning head 320 has an elongated body 304 and a head 302. The elongated body 304 extends along the longitudinal axis AA. A center plane CP extends through the head 302, the center plane CP being defined by the longitudinal axis AA and extending perpendicular to the front surface 312 of the base portion 314 of the head 302.

[0075] The base portion 314 also has a rear surface 316 opposite to the front surface 314. The first wing structure 332 and the second wing structure 342 extend from the base portion 314. In this embodiment, the first wing structure 332 and the second wing structure 342 can be symmetrical about the center plane CP. In other words, the first wing structure 332 and the second wing structure 342 are mirror images about the center plane CP.

[0076] The base portion 314 is directly coupled to the elongated body 304. The base portion 314 serves as a central structural feature from which the first wing structure 332 and the second wing structure 342 extend. The first image sensor 352 is coupled to the inner surface 334 of the first wing structure 332. The second image sensor 362 is coupled to the inner surface 344 of the second wing structure 342. The first image sensor 352 and the second image sensor 362 are image sensors configured to image visible light. In other embodiments, the first image sensor and the second image sensor can be sensitive to X-rays, visible light, infrared light, UV light, or any other frequency band useful for monitoring oral health.

[0077] The first image sensor 352 and the second image sensor 362 each have an imaging surface 354, 364. The imaging surfaces 354, 364 may be planar, or may be convex or concave. The first sensing axis L1-L1 is perpendicular to the imaging surface 354 of the first image sensor 352. The second sensing axis L2-L2 is perpendicular to the imaging surface 364 of the second image sensor 362. In the case where the imaging surfaces 354, 364 are concave or convex, the first sensing axis L1-L1 and the second sensing axis L2-L2 are perpendicular to a plane tangent to the imaging surfaces 354, 364 at a minimum point or a maximum point (applicable depending on whether the curved portion is concave or convex). The first sensing axis L1-L1 intersects the second sensing axis L2-L2. The first sensing axis L1-L1 intersects the second sensing axis L2-L2 at the center plane CP.

[0078] The base portion 314 includes a tooth guide 322. The tooth guide 322 is located at the distal end 318 of the base portion 314. The tooth guide 322 extends from the front surface 312 of the base portion 314. The tooth guide 322 can extend along the center plane CP and be symmetrical about the center plane CP. In this embodiment, the inner surfaces 334, 344 of the first wing structure 332 and the second wing structure 342 can be non-parallel. The inner surfaces 334, 344 are symmetrical about the center plane CP. When viewed from the top or bottom of the scanning head 320, the base portion 314 and the first wing structure 332 and the second wing structure 342 form a tooth channel 324 configured to receive one or more teeth of the user. The tooth channel 324 has a generally U-shaped or V-shaped cross-section.

[0079] Go to Fig.21 , showing a fourth embodiment of the scanning head 420. The scanning head 420 can be used with Figure 1The scanning head 420 can be used with the body 110 shown, or can be formed with an integral handle as desired. The scanning head 420 has an elongated body 404 and a head 402. The elongated body 404 extends along the longitudinal axis AA. A center plane CP extends through the head 402, the center plane CP being defined by the longitudinal axis AA and extending perpendicular to the front surface 412 of the base portion 414 of the head 402.

[0080] The base portion 414 also has a rear surface 416 opposite to the front surface 414. The first wing structure 432 and the second wing structure 442 extend from the base portion 414. In this embodiment, the first wing structure 432 and the second wing structure 442 can be symmetrical about the center plane CP. In other words, the first wing structure 432 and the second wing structure 442 are mirror images about the center plane CP.

[0081] The base portion 414 is directly coupled to the elongated body 404. The base portion 414 serves as a central structural feature from which the first wing structure 432 and the second wing structure 442 extend. The first image sensor 452 is coupled to the inner surface 434 of the first wing structure 432. The second image sensor 462 is coupled to the inner surface 444 of the second wing structure 442. The first image sensor 452 and the second image sensor 462 are image sensors configured to image visible light. In other embodiments, the first image sensor and the second image sensor can be sensitive to X-rays, visible light, infrared light, UV light, or any other frequency band useful for monitoring oral health.

[0082] The base portion 414 includes a tooth guide 422. The tooth guide 422 is located at the proximal end 419 of the base portion 414. The tooth guide 422 extends from the front surface 412 of the base portion 414. The tooth guide 422 can extend along the center plane CP and be symmetrical about the center plane CP. In this embodiment, the inner surface 434 of the first wing structure 432 and the inner surface 444 of the second wing structure 442 can be non-parallel. The inner surfaces 434, 444 are symmetrical about the center plane CP. The base portion 414 and the first wing structure 432 and the second wing structure 442 form a tooth channel 424 configured to receive one or more teeth of the user. The tooth channel 424 has a generally U-shaped or V-shaped cross-section.

[0083] Fig. 22 A fifth embodiment of a scanning head 520 is shown. The scanning head 520 comprises three image sensors 552, 562, 563. Optionally, the third image sensor 563 can be used to image the grinding surfaces of the premolars and molars, independent of the portion of the image taken by the first image sensor 552 and the second image sensor 562. This can provide high quality images of the grinding surfaces.

[0084] FIG. 23A to FIG. 28 A sixth embodiment of an oral health monitoring device 600 is shown. Except as noted, the oral health monitoring device 600 is similar to the device 100. The device 600 generally has a body 610 and a scanning head 620. Optionally, the scanning head 620 can be removably coupled to the body 610. More specifically, the body 610 has a handle portion 606 configured to be grasped and operated by a user. The handle portion 606 can include a plurality of user input devices 607, which can be buttons or switches configured to receive input from a user. The handle portion 606 can also include a plurality of indicators 608 that provide indications to the user. In some embodiments, the user input device 607 and the indicator 608 can be combined, such as in a touch screen or button that includes lighting. A cover 700 covers the scanning head 620.

[0085] The scanning head 620 has an elongated body 604 and a head 602. The scanning head 620 can be removably coupled to the body 610 using a friction / interference fit or via mechanical interaction, such as the scanning head 620 having a protrusion or recess that matches a recess or protrusion on the body 610. Various techniques are known for coupling the scanning head 620 of the toothbrush 600 to the body 610, and various techniques (i.e., magnetic, mechanical, interference, threaded, protrusion / detent, etc.) can be used in accordance with the invention described herein. In other embodiments, the scanning head 620 and the body 610 can be integrally formed and unitary, such that the scanning head 620 is non-detachably coupled to the body 610. The scanning head 620 and the body 610 are shown generally, and the invention is not limited by the shape, size, and / or geometry of these components.

[0086] The elongated body 604 of the scanning head 620 extends along the longitudinal axis AA. A center plane CP extends through the head 602, and the center plane CP is defined by the longitudinal axis AA and extends perpendicular to the front surface 612 of the base portion 614 of the head 602. The base portion 614 also has a rear surface 616 opposite to the front surface 612. The first wing structure 632 and the second wing structure 642 extend from the base portion 614. In this embodiment, the first wing structure 632 and the second wing structure 642 can be symmetrical about the center plane CP. In other words, the first wing structure 632 and the second wing structure 642 are mirror images about the center plane CP. In other embodiments, the first wing structure 632 and the second wing structure 642 can be asymmetrical about the center plane CP. The first wing structure 632 and the second wing structure 642 extend to the distal ends 633, 643.

[0087] The base portion 614 is directly coupled to the elongated body 604. The base portion 614 serves as a central structural feature from which the first wing structure 632 and the second wing structure 642 extend. The first image sensor 652 is coupled to the inner surface 634 of the first wing structure 632. The second image sensor 662 is coupled to the inner surface 644 of the second wing structure 642. The first image sensor 652 and the second image sensor 662 are image sensors configured to image visible light. In other embodiments, the first image sensor and the second image sensor can be sensitive to X-rays, infrared light, UV light, or any other frequency band useful for monitoring oral health.

[0088] The first image sensor 652 and the second image sensor 662 each have an imaging surface 654, 664. The imaging surfaces 654, 664 may be planar, or may be convex or concave. Optionally, the imaging surfaces 654, 664 may be lenses or protective windows covering the first image sensor 652 and the second image sensor 662. The first sensing axis L1-L1 is perpendicular to the imaging surface 654 of the first image sensor 652. The second sensing axis L2-L2 is perpendicular to the imaging surface 664 of the second image sensor 662. In the case where the imaging surfaces 654, 664 are concave or convex, the first sensing axis L1-L1 and the second sensing axis L2-L2 are perpendicular to a plane tangent to the imaging surfaces 654, 664 at a minimum point or a maximum point (applicable depending on whether the curved portion is concave or convex). The first sensing axis L1-L1 intersects the second sensing axis L2-L2. The first sensing axis L1 - L1 intersects the second sensing axis L2 - L2 at the center plane CP.

[0089] The image sensors 652, 662 may be mounted such that they are recessed within or coupled to the inner surface 634, 644 of the first wing structure 632 and the inner surface 644 of the second wing structure 642. Optionally, the image sensors 652, 662 may be recessed on the inner surfaces 634, 644, or the image sensors 652, 662 may be flush mounted with or protrude from the inner surfaces 634, 644 of the first image sensor 652 and the inner surfaces 644 of the second image sensor 662. A cavity may be formed within the head 602 to accommodate the image sensors 652, 662 and any associated wiring. Additionally, as will be discussed below, a light emitting element or light guide / light pipe may be incorporated within the cavity.

[0090] The first wing structure 632 and the second wing structure 642 can be used to maintain a desired spacing between the first image sensor 652 and the second image sensor 662 and the teeth and oral tissue of the user. The desired spacing between the user's teeth and the first image sensor 652 and the second image sensor 662 can be selected to ensure that the first image sensor 652 and the second image sensor 662 are positioned at an appropriate focal length. In some cases, due to changes in the user's oral structure or other reasons, a different focal length may be required. One of a plurality of covers 700 can be used, where the cover 700 contacts the oral tissue of the user instead of the first wing structure 632 and the second wing structure 642. As will be discussed in more detail below, a plurality of covers 700 can be used on the head 602 to allow for optimal spacing between the first image sensor 652 and the second image sensor 662 and the teeth and oral tissue of the user.

[0091] In this embodiment, the inner surface 634 of the first wing structure 632 and the inner surface 644 of the second wing structure 642 can be non-parallel. In other embodiments, the inner surfaces 634, 644 can be parallel. The inner surfaces 634, 644 are symmetrical about the center plane CP, but in other embodiments, the inner surfaces 634, 644 can be asymmetrical about the center plane CP. When viewed from the top of the scanning head 620, the base portion 614 and the first wing structure 632 and the second wing structure 642 form a tooth channel 624 configured to receive one or more teeth of the user. The tooth channel 624 has a generally U-shaped cross-section.

[0092] Optionally, the wing structures 632, 642 can be at least partially formed of a soft material such as an elastomer to provide a comfortable interface between the scanning head 620 and the user's teeth and gums. Optionally, the soft material can be a thermoplastic elastomer ("TPE"), which can form the entirety of the wing structures 632, 642. In yet other configurations, the soft material can be used to form only a portion of the wing structures 632, 642.

[0093] The first image sensor 652 and the second image sensor 662 may include a light to illuminate the oral tissue of the user. Optionally, the light may be a ring light forming a perimeter of the first image sensor 652 and the second image sensor 662. In other configurations, the light may be embedded in the wing structures 632, 642 and physically separated from the rest of the first image sensor 652 and the second image sensor 662. Optionally, the light may be an LED (light emitting diode) that may be mounted directly on the wing structures 632, 642, or may be embedded with a light pipe or light guide for directing light from the LED to the oral tissue of the user. The light or light guide may also include a diffuser that may be embedded in the wing structures 632, 642, which provides a uniform illumination field to the oral tissue of the user to assist in imaging.

[0094] Optionally, the body 610 may also include an energy storage device 609 and an electronic circuit 605, the energy storage device 609 providing power to the electronic circuit 605. The electronic circuit may include a processor and a memory. The electronic circuit 605 may be electrically connected to the image sensors 652, 662. For example, the electronic circuit 605 may be activated in response to an input received by the user input device 607. The electronic circuit 605 may then record images from the image sensors 652, 662 and store them in a memory for later evaluation. The electronic circuit 605 may also transmit them later or immediately after capturing the images in one or more ways, including wired or wireless communications. Any known storage and transmission means may be used. For example, images may be transmitted using Wi-Fi, Bluetooth, USB, and other similar technologies and standards. In an alternative embodiment, the processor of the electronic circuit 605 may be used to perform on-board analysis of the image to identify areas of concern, including areas with plaque, caries, or other possible oral health conditions of concern.

[0095] Go to FIG. 29A to FIG. 29C , the scanning head 620 of the oral health monitoring device 600 is shown in various configurations. Fig.29A , the scanning head 620 is shown without the cover 700 as discussed above. In this embodiment, since the focal length is determined by the length L of the first wing structure 632 and the second wing structure 642 A The length L is set so that the scanning head 620 can position the image sensors 652, 662 closest to the oral tissue of the user. A It may be measured from the center of the imaging surface 654 , 664 adjacent to one of the first image sensor 652 and the second image sensor 662 to the distal end 633 , 643 in a direction parallel to the center plane CP-CP.

[0096] Therefore, the length L of the first wing structure 632 and the second wing structure 642 is A The focal length between the oral tissue of the user and the first image sensor 652 and the second image sensor 662 is determined. Although the oral tissue of the user may be different in shape and size, the positioning of the scanning head 620 is determined by the length of the first wing structure 632 and the second wing structure 642. It should be noted that in other embodiments, the angle between the first wing structure 632 and the second wing structure 642 can be changed, which can also affect the focal length of the first image sensor 652 and the second image sensor 662.

[0097] Fig.29BA cover 700 is shown on the head 602 of the scanning head 620. As discussed above, the cover 700 covers the head 602. Optionally, the cover 700 can be formed of an elastomeric material or a rubber material (e.g., a thermoplastic elastomer). The cover 700 can be configured to snap onto the head 602 without requiring a separate fastener, but instead relying on the flexibility of the cover 700 to allow installation and removal on the head 602. The cover 700 has two holes 702 that ensure that the image sensors 652, 662 are not obstructed. The holes 702 are approximately the same size as the imaging surfaces 654, 664 to ensure that the light source and the image sensors 652, 662 can pass light through the holes 702.

[0098] The cover 700 has a front surface 712, a rear surface 716, a first wing structure 732 and a second wing structure 742. The first wing structure 732 and the second wing structure 742 extend the first wing structure 632 and the second wing structure 642 of the head 602, and are spaced apart by a distance L. A Compared to the increase in distance L B . Distance L B It is measured from the center of the imaging surface 654 , 664 adjacent to one of the first image sensor 652 and the second image sensor 662 to the distal ends 733 , 743 of the first wing structure 732 and the second wing structure 742 in a direction parallel to the center plane CP-CP.

[0099] The first wing structure 732 and the second wing structure 742 of the cover 700 are curved around and toward the center plane CP-CP. This is done to more effectively engage the oral tissue of the user. The overall curvature of the wing structures 732, 742 is greater than the wing structures 632, 642 of the head 602, but the spacing between the distal end 733 of the first wing structure 732 and the distal end 743 of the second wing structure 742 can be equal to, greater than, or less than the spacing between the distal end 633 of the wing structure 632 and the distal end 643 of the wing structure 642. It is generally preferred to keep the spacing between the distal ends 733, 743, 633, 643 approximately the same regardless of whether the cover 700 is installed on the head 602, so the curvature of the cover 700 can be different from the curvature of the wing structures 632, 642 of the head 602.

[0100] The distal ends 733, 743, 633, 643 engage the oral tissue of the user. The addition of the cover 700 changes the spacing between the oral tissue of the user and the image sensors 652, 662, allowing the focal length to be changed by adding or removing the cover 700. This allows adjustment for different users without having to adjust the design for different oral tissues or compromise focus or other optical properties to ensure proper focus for all users.

[0101] Go to Fig.29CFIG. 6 shows a scanning head 620, showing a second housing 700 coupled to the head 602. Except as noted, the second housing 700 and Fig.29B 662 are numbered the same as the first cover sleeve 700 discussed in the previous section. Optionally, the second cover sleeve 700 can be formed of an elastomeric material or a rubber material (e.g., a thermoplastic elastomer). The second cover sleeve 700 can be configured to snap onto the head 602 without the need for separate fasteners, but instead relying on the flexibility of the cover sleeve 700 to allow installation and removal on the head 602. The second cover sleeve 700 has two holes 702 that ensure that the image sensors 652, 662 are not obstructed. The holes 702 are approximately the same size as the imaging surfaces 654, 664 to ensure that the light source and the image sensors 652, 662 can pass light through the holes 702.

[0102] The cover 700 has a front surface 712, a rear surface 716, a first wing structure 732 and a second wing structure 742. The first wing structure 732 and the second wing structure 742 extend the first wing structure 632 and the second wing structure 642 of the head 602, and are spaced apart by a distance L. A , L B Compared with the increase in distance L C . Distance L C It is measured from the center of the imaging surface 654 , 664 adjacent to one of the first image sensor 652 and the second image sensor 662 to the distal ends 733 , 743 of the first wing structure 732 and the second wing structure 742 in a direction parallel to the center plane CP-CP.

[0103] The first wing structure 732 and the second wing structure 742 of the cover 700 are curved around and toward the center plane CP-CP. This is done to more effectively engage the oral tissue of the user. The overall curvature of the wing structures 732, 742 is greater than the wing structures 632, 642 of the head 602, but the spacing between the distal end 733 of the first wing structure 732 and the distal end 743 of the second wing structure 742 can be equal to, greater than, or less than the spacing between the distal end 633 of the wing structure 632 and the distal end 643 of the wing structure 642. It is generally preferred to keep the spacing between the distal ends 733, 743, 633, 643 approximately the same regardless of whether the cover 700 is installed on the head 602, so the curvature of the cover 700 can be different from the curvature of the wing structures 632, 642 of the head 602.

[0104] The distal ends 733, 743, 633, 643 engage the oral tissue of the user. The addition of the cover 700 changes the spacing between the oral tissue of the user and the image sensors 652, 662, allowing the focal length to be changed by adding or removing the cover 700. This allows adjustment for different users without having to adjust the design for different oral tissues or compromise focus or other optical properties to ensure proper focus for all users. It can be seen that a variety of covers 700 can be provided, allowing the optimal focal length to be selected for a given user.

[0105] Figures 30 to 38 The cover 700 is shown in more detail. The cover 700 has a front surface 712 and a rear surface 716, with two holes 702 in the front surface 712 to expose the first image sensor 652 and the second image sensor 662. The head opening 721 extends to a cavity 722 that receives the head 602. The cover 700 also includes a plurality of retaining elements 723 that are configured to surround the head 602 and retain the head 602 within the cavity 722. The retaining elements 723 can form a part of the head opening 721, or can be formed separately. Similarly, the head opening 721 can include one or more sealing features that provide a liquid-tight seal between the head 602 and the cover 700.

[0106] The cover 700 also includes a first wing structure 732 and a second wing structure 742 extending to distal ends 733, 743. The first wing structure 732 and the second wing structure 742 are symmetrical, although in other embodiments, the first wing structure 732 and the second wing structure 742 can be asymmetrical. The wing structures 732, 742 can be at least partially hollow, and the cavity 722 extends into a portion of the first wing structure 732 and the second wing structure 742. As described above, the cover 700 can be formed of an elastomeric material to improve flexibility and ensure user comfort.

[0107] Although the present invention has been described with reference to specific examples including currently preferred modes for implementing the present invention, it will be appreciated by those skilled in the art that there are numerous variations and permutations of the above-described systems and techniques. It should be understood that other embodiments may be utilized and structural and functional modifications may be made without departing from the scope of the present invention. Therefore, the spirit and scope of the present invention should be broadly interpreted as set forth in the appended claims.

Claims

1. An oral health monitoring device, comprising: an elongated body extending along a longitudinal axis; and a head coupled to the elongated body, the head comprising: a base portion coupled to the elongated body; a first wing structure extending from the base portion; a second wing structure extending from the base portion; a first image sensor coupled to the first wing structure, the first image sensor having a first sensing axis perpendicular to an imaging surface of the first image sensor; and a second image sensor coupled to the second wing structure, the second image sensor having a second sensing axis perpendicular to an imaging surface of the second image sensor; The first sensing axis of the first image sensor intersects with the second sensing axis of the second image sensor. 2 . The device of claim 1 , wherein the first wing structure and the second wing structure each have an inner surface, the inner surfaces of the first wing structure and the second wing structure being non-parallel.

3. A device according to claim 1 or claim 2, wherein the head further comprises a tooth guide protruding from the base portion, the tooth guide being configured to engage the user's teeth and separate the base portion relative to the user's teeth.

4. The device according to any one of claims 1 to 3, further comprising a central plane, along which the longitudinal axis extends, and the central plane extends perpendicular to the front surface of the base portion. 5 . The device of claim 4 , wherein the first wing structure and the second wing structure are symmetrical about the central plane.

6. A device according to claim 4 or claim 5, wherein the head further comprises a tooth guide protruding from the front surface of the base portion, the tooth guide extending along the central plane.

7. The device of claim 6, wherein the tooth guide is symmetrical about the center plane.

8. The device of any one of claims 1 to 4, wherein the first wing structure extends perpendicular to the longitudinal axis and the second wing structure extends at an oblique angle to the longitudinal axis.

9. The device of any one of claims 1 to 8, wherein the first and second wing structures and the base portion together form a tooth channel, the tooth channel having a U-shape.

10. The device according to any one of claims 1 to 6, wherein the base portion comprises a cavity, a tooth guide forming a wall of the cavity.

11. The device of claim 10, wherein one of the first image sensor or the second image sensor is mounted within the cavity.

12. The device of any one of claims 1 to 11, further comprising a cover configured to cover the head.

13. The device of claim 12, wherein the cover comprises first and second wing extensions extending from the first and second wing structures.

14. An oral health monitoring device, comprising: an elongated body extending along a longitudinal axis; and a head coupled to the elongated body, the head comprising: a base portion coupled to the elongated body; a first wing structure extending from the base portion, the first wing structure having an inner surface; a second wing structure extending from the base portion, the second wing structure having an inner surface; a first image sensor coupled to the first wing structure; and a second image sensor coupled to the second wing structure; Wherein the inner surfaces of the first wing structure and the second wing structure are non-parallel.

15. The device of claim 14, wherein the first image sensor has a first sensing axis perpendicular to an imaging surface of the first imaging sensor, and the second image sensor has a second sensing axis perpendicular to an imaging surface of the second imaging sensor, the first sensing axis of the first image sensor intersecting the second sensing axis of the second image sensor.

16. A device according to claim 14 or claim 15, wherein the head further comprises a tooth guide protruding from the base portion, the tooth guide being configured to engage the teeth of a user and separate the base portion relative to the teeth of the user.

17. The device of any one of claims 14 to 16, further comprising a central plane along which the longitudinal axis extends and which extends perpendicular to the front surface of the base portion.

18. The device of claim 17, wherein the first wing structure and the second wing structure are symmetrical about the central plane.

19. A device according to claim 17 or claim 18, wherein the head further comprises a tooth guide protruding from the front surface of the base portion, the tooth guide extending along the central plane.

20. The device of claim 19, wherein the tooth guide is symmetrical about the central plane.

21. The device of any one of claims 14 to 17, wherein the first wing structure extends perpendicular to the longitudinal axis and the second wing structure extends at an oblique angle to the longitudinal axis.

22. The device of any one of claims 14 to 21, wherein the first and second wing structures and the base portion together form a tooth channel, the tooth channel having a U-shape.

23. The device according to any one of claims 14 to 19, wherein the base portion comprises a cavity, a tooth guide forming a wall of the cavity.

24. The device of claim 23, wherein one of the first image sensor or the second image sensor is mounted within the cavity.

25. The device of any one of claims 14 to 24, further comprising a cover configured to cover the head.

26. The device of claim 25, wherein the cover comprises first and second wing extensions extending from the first and second wing structures.

27. An oral health monitoring device, comprising: an elongated body extending along a longitudinal axis; and a head coupled to the elongated body, the head comprising: a base portion coupled to the elongated body; a first wing structure extending from the base portion, the first wing structure having an inner surface; a second wing structure extending from the base portion, the second wing structure having an inner surface; a first image sensor coupled to the first wing structure; a second image sensor coupled to the second wing structure; and A tooth guide extends from the base portion, the tooth guide being configured to engage teeth of a user and separate the base portion from the teeth of the user.

28. The apparatus of claim 27, wherein the first wing structure and the second wing structure each have an inner surface, the inner surfaces of the first wing structure and the second wing structure being non-parallel.

29. An apparatus according to claim 27 or claim 28, wherein the first image sensor has a first sensing axis perpendicular to an imaging surface of the first imaging sensor, and the second image sensor has a second sensing axis perpendicular to an imaging surface of the second imaging sensor, the first sensing axis of the first image sensor intersecting the second sensing axis of the second image sensor.

30. The device of any one of claims 27 to 29, further comprising a central plane along which the longitudinal axis extends and which extends perpendicular to the front surface of the base portion.

31. The device of claim 30, wherein the first wing structure and the second wing structure are symmetrical about the central plane.

32. A device according to claim 30 or claim 31, wherein the tooth guide protrudes from the front surface of the base portion, the tooth guide extending along the central plane.

33. The device of claim 32, wherein the tooth guide is symmetrical about the center plane.

34. The device of any one of claims 27 to 30, wherein the first wing structure extends perpendicular to the longitudinal axis and the second wing structure extends at an oblique angle to the longitudinal axis.

35. The device of any one of claims 27 to 34, wherein the first and second wing structures and the base portion together form a tooth channel, the tooth channel having a U-shape.

36. A device according to any one of claims 27 to 32, wherein the base portion comprises a cavity, a tooth guide forming a wall of the cavity.

37. The device of claim 36, wherein one of the first image sensor or the second image sensor is mounted within the cavity.

38. The device of any one of claims 27 to 37, further comprising a cover configured to cover the head.

39. The device of claim 38, wherein the cover comprises first and second wing extensions extending from the first and second wing structures.

Images