Patent Application
20240298892
PCT/EP2015/074897 describes an acquisition kit for acquiring, by means of a cell phone, extraoral photos of the teeth of a user, with their mouth closed or open.
There is a continuing need for an acquisition kit which is
The 2D or 3D data, relating to the teeth, may in particular be extraoral images or three-dimensional digital models.
The kit must allow the acquisition of data for each tooth of the user, and in particular teeth at the back of the mouth.
An aim of the present invention is to meet this need, at least partially.
The invention proposes an acquisition kit comprising:
After several years of research, the inventors have discovered many advantageous features of such an acquisition kit.
Such an acquisition kit may in particular include one or more of the following preferred features:
According to a First Main Aspect, Particularly Advantageous for Improving the Interface with the User:
According to a sixth main aspect, particularly advantageous for improving hygiene and compliance:
In one embodiment of the invention, the cell phone holder is shaped so that the representation of the spacer in the view seen by the lens of this cell phone in the default configuration of this cell phone accounts for less than 50%, preferably less than 40%, preferably less than 30%, preferably less than 20%, preferably less than 10%, preferably less than 5%, of the surface area of said view.
In one embodiment, an acquisition configuration is predetermined so that the representation of the spacer in the view seen by the lens of the cell phone in said acquisition configuration accounts for less than 50%, preferably less than 40%, preferably less than 30%, preferably less than 20%, preferably less than 10%, preferably less than 5%, of the surface area of said view. This predetermined acquisition configuration is programmed into the cell phone. The user or the cell phone may select it, for example according to the spacer used.
Naturally, the features, whether optional or not, which define the above main aspects are preferably combined with one another.
The following documents have been cited by the INPI in relation to one or more of the above main aspects:
The invention also relates to a method for acquiring 2D or 3D data by means of an acquisition kit according to the invention, said method comprising the following steps:
Preferably, in step d), the spacer is positioned in such a way as not to rest on the gums, or on the teeth, or on any orthodontic appliance worn on the teeth. Preferably, it is in contact only with the lips and the inner surface of the cheeks.
The distal flange may in particular be more than 1 mm, more than 2 mm, more than 3 mm, and/or less than 10 mm, preferably less than 8 mm from the teeth.
In step f), the rotation may be from right to left or from left to right, about a vertical axis in the service position. The degree of rotation is preferably greater than 10°, greater than 20°, greater than 30°, greater than 40°, greater than 50°, and/or less than 90°, in particular when step e) has been performed facing the user.
In step f), the rotation may be from top to bottom or from bottom to top, about a horizontal axis in the service position. The degree of rotation is preferably greater than 10°, greater than 20°, and/or less than 60°, in particular when step e) has been performed facing the user, the optical axis being horizontal.
By repeating steps e) and f), the user thus acquires 2D or 3D data on different teeth with different orientations.
“User” means any person for whom a kit according to the invention may be used, whether or not this person is ill, or whether or not this person is undergoing treatment. A kit according to the invention may be used for an animal other than a human being.
“Dental care professional” means a dentist, an orthodontist or an orthodontic laboratory.
A “cell phone” or “mobile phone” is a device such as an iPhone®. Such a device typically weighs less than 500 g, has a camera with a lens allowing it to take videos or photos, or even a scanner allowing it to acquire three-dimensional digital models. A cell phone is also capable of exchanging data with another device located more than 500 km away from the cell phone, and is capable of displaying said data.
The “default configuration” of a cell phone consists of all the settings of this cell phone as defined before it is first used.
“Image” means a two-dimensional image, such as a photograph. An image is made up of pixels.
A “video” is considered to be a set of photos.
“Model” means a three-dimensional digital model. A model is made up of a set of voxels.
The cell phone makes it possible to acquire “extraoral” data, that is to say without inserting the lens of the cell phone into the mouth of the user. The “2D data” acquired by a cell phone are images, and in particular, conventionally, photos and video. The “3D data” acquired by a cell phone are data providing coordinates in all three dimensions of space. The “3D data” are preferably three-dimensional digital models.
A “retractor”, or “dental retractor”, is a device for rolling back the lips.
It comprises an upper flange and a lower flange, and/or a right flange and a left flange, extending around a retractor opening and intended to be inserted between the teeth and the lips. In the service position, the lips of the user rest on these flanges, such that the teeth are visible through the retractor opening. A retractor thus makes it possible to see the teeth without the lips getting in the way.
However, the teeth do not rest on the retractor, such that the user can, by turning the head relative to the retractor, change which teeth are visible through the retractor opening. They may also modify the distance between their dental arches. In particular, a retractor does not press on the teeth in such a way as to move the two jaws apart.
In one embodiment, a retractor is configured to elastically move the upper and lower lips apart in such a way as to expose the teeth visible through the retractor opening.
In one embodiment, a retractor is configured such that the distance between the upper flange and the lower flange, and/or between the right flange and the left flange is constant.
Retractors are described for example in PCT/EP2015/074896, U.S. Pat. No. 6,923,761, or US 2004/0209225.
“Attaching” one part to another means establishing a physical connection between these two parts, such that any movement of one of these parts eventually causes movement of the other part. A part mounted in translation, rotatably or via a ball joint on another part is “attached” to this other part. Attachment may be “permanent” or performed “removably”, depending on whether or not the two parts are designed to be dismantled, preferably by hand, by a user. An attachment may be rigid or otherwise, depending on whether or not it allows relative movement between the two parts attached to one another. An element made in one piece with another element is considered to be “attached” to this other element.
Two parts are “elastically movable” relative to one another if their relative position may be modified under the action of a force and if, when this force ceases, they return to their initial relative positions.
A “corner edge” of a surface is a line on this surface which has a length greater than 1 cm, and which is made up of points at which a line of greatest slope has a change in slope, also referred to as a “break in slope”, of greater than 45°. By extension, it is also said that the angle of the corner edge is greater than 45° or that the surface has a break in slope of greater than 45°. A corner edge is re-entrant when it defines a recess. For example,
An “assembled position” is a position in which the cell phone is rigidly attached to the adapter of the kit, and the spacer is rigidly attached to the adapter.
An “acquisition position” is an assembled position in which the lens of the cell phone has an at least partial, preferably a full, view of the oral opening, through the adapter opening and the acquisition opening.
The “service position” is the position in which the spacer of the kit, in the acquisition position, is partially inserted in the user's mouth, as shown in
The “mouth closed” position is the occlusion position in which the upper and lower teeth of the user are in contact.
The “mouth open” position is the position in which the mouth is fully open.
Unless stated otherwise, the qualifying terms used to define positions or orientations in space, such as “horizontal”, “vertical”, “bottom”, “top”, “upper”, “lower”, “right” or “left”, are defined, for the sake of clarity, with reference to a service position seen by a user, with their head straight and having placed their lips around the oral opening of the spacer.
For example, a vertical axis is an axis which, in the service position, is vertical.
The lateral ends (right and left) of the distal flange are the points on the distal flange that are furthest to the right and to the left of the user in the service position.
Unless stated otherwise, the qualifying terms “outer” and “inner” refer to volumes or closed contours, to designate an element outside the volume, for example outside a chamber, or outside the closed contour. For example, the outer surface of a tubular body is the surface that is exposed to the outside of the tubular body.
The adjectives “first” and “second” are used purely for the sake of clarity.
For clarity, an axis or a direction which, in the service position, extends horizontally and perpendicular to the general plane of the oral opening, is referenced Xi, “i” being an index referring to a part concerned by this axis or this direction. An axis or a direction which, in the service position, extends vertically is referenced Zi, “i” being an index referring to a part concerned by this axis or this direction. An axis or a direction which, in the service position, extends perpendicular to the axes Xi and Zi is referenced Yi, “i” being an index referring to a part concerned by this axis or this direction. For the user, the axes Xi, Yi and Zi are therefore front-rear, right-left, and vertical axes, respectively.
The axis of an opening is the axis that passes through its center, perpendicular to the general plane of the opening.
First and second straight lines are said to be perpendicular to one another when first and second planes perpendicular to said first and second straight lines, respectively, are perpendicular to one another.
“Include”, “comprise” and “have” shall be construed broadly and as not implying any limitation, unless stated otherwise.
Further features and advantages of the invention will become apparent on reading the detailed description which follows and on studying the appended drawing, in which:
In the various figures, identical or similar members have been designated using identical references.
The figures are provided for illustrative purposes. They are not limiting.
The kit 10 shown in
Any conventional cell phone may be used.
A cell phone 12 is a personal device, conventionally of substantially parallelepiped shape, conventionally comprising a camera.
A cell phone typically has:
The front and rear faces are conventionally generally rectangular in shape, parallel and have the same dimensions. Their length L12 is typically between 8 and 20 cm. Their width 112 is typically between 4 and 10 cm, as shown in
The thickness of the cell phone is typically between 4 mm and 15 mm.
The screen 20 covers substantially the entire rear face. It serves as the interface for the user. In particular, it allows the user to visualize what the lens 16 “sees”, that is to say the “view” seen by the lens. Preferably, the screen 20 is touch-sensitive and makes it possible to control functions of the cell phone.
The lens 16 conventionally has an optical axis X16 perpendicular to the front face, and allows the acquisition of 2D or even 3D data. In particular, it allows the acquisition of color photos, and/or infrared photos. Infrared photos advantageously make it possible to show the teeth with excellent contrast.
The lens 16 typically has a diameter greater than 1 mm and less than 15 mm.
It is sometimes at the center of the cell phone. It is generally positioned close to one side of the front face, for example less than 3 cm from a short side of the front face, conventionally halfway along this side, or in a corner of the front face, for example less than 1 cm from a corner of the front face.
The cell phone 12 may comprise, on the front face, several lenses, for example two, more than two, more than three or more than four lenses 16 and/or less than eight, or less than six lenses.
The flash 18 may be close to the lens 16, preferably less than 4 cm, less than 3 cm, less than 2 cm, or less than 1 cm and/or more than 1 mm from the lens 16. The cell phone 12 may comprise, on the front face, several flashes, for example more than two, more than three or more than four flashes and/or less than eight, or less than six flashes.
In a preferred embodiment, the cell phone comprises computer software for guiding the user during the operations, for example to instruct the user how to assemble or use the kit, for example to tell the user the position and/or the orientation to be given to the holder to take particular photos.
The cell phone 12 is attached, preferably removably, to the holder 14.
The holder 14 has a dual purpose. It makes it possible, simultaneously, to
It comprises a spacer 24 and an adapter 26.
In the assembled position, the spacer 24 and the adapter 26 together define a chamber 28 (see
The chamber 28 is preferably substantially tubular, preferably rectilinear with an axis X28.
The length of the chamber 28, measured along the axis Xa of the adapter opening, is preferably greater than 3 cm, preferably greater than 5 cm, and/or less than 25 cm, preferably less than 20 cm, preferably less than 15 cm, preferably less than 10 cm, preferably less than 8 cm, preferably less than 7 cm.
The length of the chamber 28 is preferably constant in the assembled position.
Preferably, the chamber 28 opens to the outside only through the oral opening Oo and the adapter opening Oa and, more preferably, the cell phone 12 closes off the adapter opening Oa. Advantageously, light levels in the external environment do not affect the acquisition of data (images or 3D models) by the cell phone.
Preferably, the holder does not include any artificial illumination means, illumination of the oral opening preferably being ensured exclusively by the flash of the cell phone 12.
The oral opening defined by the spacer 24 may extend in a vertical plane Po, passing through its center Co, preferably perpendicular to the axis X24 connecting the centers of the oral opening Oo and of the acquisition opening Oa′.
Preferably, however, as shown in
Preferably, the oral opening Oa is curved about a vertical axis Zo in the service position, preferably exclusively about a vertical axis Zo, in such a way as to get close to the teeth in the service position.
The distal flange 46, preferably the spacer 24, is/are preferably symmetrical with respect to a vertical plane which, in the service position, is coincident with the sagittal plane. The axis Zo is preferably included in this vertical plane and perpendicular to the axis X24.
Preferably, the radius of curvature about the vertical axis Zo, in particular in the region of said vertical plane, is greater than 20 mm, preferably greater than 30 mm, preferably greater than 40 mm, preferably greater than 45 mm, and/or less than 80 mm, preferably less than 70 mm, preferably less than 60 mm, preferably less than 55 mm, preferably approximately 50 mm.
Preferably, the radius of curvature varies by less than 30%, preferably by less than 20%, preferably by less than 10%, or is even substantially constant along the distal flange, that is to say across the distal flange in a top view as shown in
A radius of curvature of between 47 mm and 58 mm is particularly suitable.
Seen from above, the teeth of a dental arch have a curvature of which the radius increases considerably in the direction toward the back of the mouth, like a C that widens. If the curvature of the oral opening follows the curvature of the teeth, the holder is particularly stable in the service position, but this stability impairs rotation about the user. Furthermore, it results in the oral opening moving away from the teeth when the user performs such a rotation.
In a particularly advantageous embodiment of the invention, the curvature of the oral opening does not allow the distal flange 46 to follow the teeth.
Such a curvature of the oral opening offers several additional advantages as regards the extraoral acquisition of 2D or 3D data.
Tests have shown in particular that such a curvature limits the risk of the lips coming over the distal flange and blocking the oral opening when the kit is oriented, to the right or left of the user, for the acquisition of 2D or 3D data, and in particular photographs, facing the molars or premolars (lateral viewing positions). In these positions to the right or left of the user, this curvature also prevents the spacer from coming into abutment, for example, with an attachment of an orthodontal appliance. This curvature also prevents the spacer from pinching the cheeks when the oral opening is brought back to face the incisors.
Tests have also shown that this curvature limits pulling on the lips in lateral viewing positions, which improves comfort, and therefore compliance with any orthodontal treatment.
“Curved” means a general shape making it possible to follow an arc, that is to say to follow the shape of at least part of a “C”. Preferably, the curvature is continuous, with no break in slope, so as not to create re-entrant corner edges.
The adapter opening Oa may be defined by the adapter 26 and/or by the spacer 24.
Preferably, the adapter opening Oa is defined by the adapter 26 and the spacer 24 defines an acquisition opening Oa′ (see
The area of the oral opening is preferably greater than 500 mm2, preferably greater than 800 mm2, preferably greater than 1000 mm2, preferably greater than 1100 mm2, preferably greater than 1200 mm2, preferably greater than 1300 mm2, and/or less than 2000 mm2, preferably less than 1800 mm2, preferably less than 1600 mm2, preferably less than 1500 mm2, preferably less than 1400 mm2.
Preferably, the oral opening is shaped in such a way that the lens of the cell phone can see several teeth, preferably more than two, more than three, more than four, more than five and/or less than 32 teeth, through the acquisition opening.
The oral opening is preferably oval, and has a length, in the horizontal direction, which is greater than its height, in the vertical direction.
The length of the oral opening is preferably greater than 50 mm, preferably greater than 60 mm, preferably greater than 70 mm, and/or less than 100 mm, preferably less than 90 mm.
The height of the oral opening is preferably adapted to allow the mouth of the user to close in the service position. It is preferably greater than 20 mm, preferably greater than 25 mm, preferably greater than 30 mm, and/or less than 50 mm, preferably less than 40 mm.
The area of the acquisition opening is preferably greater than 500 mm2, preferably greater than 800 mm2, preferably greater than 1000 mm2, preferably greater than 1100 mm2, preferably greater than 1200 mm2, preferably greater than 1300 mm2, preferably greater than 1400 mm2, preferably greater than 1500 mm2, preferably greater than 1600 mm2, and/or less than 2000 mm2, preferably less than 1900 mm2, preferably less than 1800 mm2, preferably less than 1700 mm2.
In a preferred embodiment, the spacer 24 has the shape of a tubular body opening out exclusively through the oral opening Oo and acquisition opening Oa′.
The oral opening Oo and the acquisition opening Oa′ are preferably coaxial.
Preferably, as shown schematically in
Preferably, the acquisition opening Oa′ of the spacer and the adapter opening Oa have substantially the same dimensions. They are preferably coaxial.
Preferably, as shown in
At least said end of the spacer 24, preferably the entire spacer 24, is defined by a solid wall, that is to say that the spacer only opens to the outside through the oral opening and the acquisition opening.
In one embodiment, the adapter 26 and the spacer 24 form a one-piece assembly, the adapter 26 being rigidly attached to the spacer 24 permanently, or even being made in one piece with the spacer.
The adapter 26 is preferably rigidly attached to the spacer 24 removably.
Advantageously, the adapter 26 may be used for several spacers.
Also advantageously, the spacer 24 may be cleaned or sterilized independently of the adapter.
In particular in this embodiment, the spacer 24 is preferably made of a material that can withstand autoclaving, preferably in an autoclavable or a dishwasher. Preferably, the spacer may be sterilized more than 50 times without degrading. Sterility is considered to be achieved when the probability of isolating a germ is less than one in 1 million, according to the sterility assurance level (SAL) regulated by standard EN 556.
Preferably, the adapter 26 is rigidly attached to the spacer 24 by means of a clip that has adapter 2726 and spacer 2724 attachment portions, as shown in
Preferably, the spacer attachment portion 2724 is stationary on the spacer 24, in other words it is not designed to be moved during assembly and disassembly with the adapter attachment portion. Preferably, the spacer attachment portion 2724 is not deformed during assembly and disassembly with the adapter attachment portion. It retains its shape when it is coupled to and/or uncoupled from the adapter attachment portion 2726. For example, it may be formed in the wall of the spacer 24 which delimits the chamber 28, by a bead of material or by a blind recess. The spacer attachment portion is considered to retain its shape when no point on its surface moves, during assembly and disassembly, by more than 1 mm. Preferably, no point on the surface of the spacer attachment portion moves, during assembly and disassembly, by more than 0.5 mm, preferably by more than 0.2 mm.
The stationary nature of the spacer attachment portion 2724, which may be described as “passive”, advantageously makes it possible to avoid its deformation during a spacer 24 sterilization operation. This feature is particularly advantageous when the adapter 26 does not need to be sterilized, for example because it is protected by the spacer 24.
Preferably, the adapter attachment portion 2726 is movable relative to the rest of the adapter. For example, it may be formed by a claw, adapted to hook onto a bead of spacer material or to fit elastically into a recess in the spacer 24, as shown in
The adapter attachment portion 2726 may also be a part of the elastically deformable adapter, for example a bead of elastically deformable material. In one embodiment, the adapter carries one or more beads, for example four beads, arranged so as to fit elastically into one or more respective recesses made on the outer surface of the body of the spacer during assembly.
Preferably, the spacer attachment portion 2724 and the adapter attachment portion 2726 are made of a rigid material, that is to say not deformable when pressed by hand, unlike an elastic material such as an elastomer. Preferably, this material has a hardness greater than 70 Shore D and/or less than 100 Shore D.
Preferably, the kit, preferably at least the spacer 24, bears a personalization piece bearing the personalization mark 39 attached, preferably removably, to the adapter 26 and/or to the spacer 24.
The personalization mark 39 preferably comprises an identifier identifying the user and/or a dental care professional's practice and/or a company, for example a group of dental care professionals.
In one embodiment, the user identifier is specific, that is to say it makes it possible to uniquely identify the user. In other words, it is only used for the user.
The personalization mark 39 may also include information relating to a pathology of the user.
The personalization mark 39, in particular the personalization piece, is preferably attached, preferably removably, to the adapter 26 and/or to the spacer 24, by the user or by a dental care professional in charge of the user, for example an orthodontist who has previously fitted an orthodontal appliance, active or passive, in the mouth of the user.
The personalization piece may be attached by any known means, in particular by means of one or more clip(s), screw(s), hook-and-loop tape(s) of Velcro® type, elastic band(s), magnet(s), hook(s), bolt(s), strap(s), suction cup(s), or an adhesive material.
The personalization mark may also be inscribed, or engraved, on the spacer or the adapter, preferably on the spacer.
The inscription may for example be inscribed by means of a pen, for example an indelible marker, in particular on a cardboard spacer, or by pad printing.
The identifier may for example consist of a color, alphanumeric characters, a geometric or non-geometric pattern or a particular microstructure.
The personalization mark 39 may comprise an esthetic depiction, for example a jewel, or a fun depiction, for example depicting a comic strip character.
Preferably, the personalization mark 39 is in a color or a material different to the color or material, respectively, of the spacer 24 and/or the adapter 26 bearing it.
The personalization mark 39 may for example represent more than 0.1%, more than 0.5%, more than 1%, more than 3% and/or less than 90%, less than 50%, less than 20%, less than 10% of the surface area of the spacer 24 and/or of the adapter 26 bearing it.
In one embodiment, the kit comprises several removable spacers, referenced 241 and 242 in
Advantageously, the adapter 26 may be used for several different people, each person using a spacer 24 which is specific to them.
Advantageously, the user takes to the kit more readily, which encourages them to use it. Compliance with a treatment requiring the use of an acquisition kit according to the invention is thereby improved.
Moreover, the adapter may be used for several spacers, for example each assigned to a child from the same family.
The spacer 24 has the function of defining a spacing between the cell phone attached to the adapter 26 and the oral opening Oo as well as an orientation of the cell phone with respect to the oral opening. Advantageously, in the service position, the data (images or 3D models of the user's teeth) acquired by the cell phone 12 through the lens 16 are thus acquired at a predetermined distance from the user's teeth and with a predefined orientation. Preferably, the spacer 24 is configured such that this spacing and this orientation are constant.
The spacer 24 is preferably symmetrical with respect to a horizontal plane and/or with respect to a vertical plane.
The spacer 24 comprises a body 40, opening out at its ends through the oral opening Oo and acquisition opening Oa′.
The body 40 preferably has the general shape of a tube, of constant or variable cross section, preferably substantially rectilinear with an axis X24, opening out at its ends through the centers of the oral opening Oo and of the acquisition opening Oa′. The spacer 24 may in particular have the general shape of a cylindrical tube, for example of circular, oval or polygonal, for example rectangular, cross section or a tapered tube.
The cross section of the spacer 24, that is to say in a sectional plane perpendicular to the axis X24, preferably has a substantially identical general shape all the way along the tube, for example rectangular or oval or round.
The spacer 24 is preferably shaped such that in the absence of any use of a zoom of the cell phone 12, the representation of the spacer 24 in the view seen by the lens 16 (shown, in
Advantageously, the precision of the usable zone representing the teeth is thereby improved.
Preferably, the representation of the spacer 24 in said view shows a portion 42 of the spacer which extends exclusively to less than 5 cm, 3 cm, 2 cm, 1 cm from the oral opening Oo, as shown in
Advantageously, the focus on the teeth is thereby improved.
To limit the surface area taken up by the representation of the spacer 24 in the view seen by the lens 16, it is possible to limit the length of the spacer 24. The spacer 24 must however have a minimum size for focusing to be possible.
The “acquisition configuration” consists of all the settings of the cell phone which determine the acquisition of 2D or 3D data by the lens 16 of the cell phone. In one embodiment, the acquisition configuration is the default configuration of the cell phone 12.
To limit the surface area taken up by the representation of the spacer 24 in the view seen by the lens 16, alternatively or in addition to limiting the length of the spacer 24, it is possible to configure the cell phone according to an acquisition configuration specifically adapted to the use of the acquisition kit.
The acquisition configuration is preferably defined by the cell phone itself, in other words automatically.
Preferably, the acquisition configuration is obtained by adjusting the zoom of the cell phone. Preferably, the zoom is adjusted by the cell phone, without user intervention for this purpose. For example, the zoom may be adjusted when a program loaded on the cell phone is launched for the use of the acquisition kit.
Preferably, the acquisition configuration, preferably the zoom, is adjusted automatically according to the spacer, for example according to its shape, or its length, or its width. In one embodiment, the spacer is recognized by the cell phone, for example by reading a mark positioned on the spacer or by analysis of the view seen by the lens showing a portion of the spacer, in the acquisition position.
In one embodiment, the acquisition configuration, preferably the zoom, is defined automatically as a function of a distance measured, in the service position, for example to achieve focusing.
To limit the surface area taken up by the representation of the spacer 24 in the view seen by the lens 16, alternatively or in addition to limiting the length of the spacer 24 and adjusting the acquisition configuration, and in particular the zoom of the cell phone, it is also possible to act on the shape of the chamber 28, and in particular on the shape of the spacer 24.
The chamber 28, and preferably at least the spacer 24, preferably comprise(s) at least one segment 44 which diverges, preferably regularly, toward the oral opening Oa. In one embodiment, the divergent segment 44 starts at less than 5 cm, at less than 3 cm, at less than 1 cm from the acquisition opening Oa′, preferably at less than 5 cm, at less than 3 cm, at less than 1 cm from the adapter opening Oa.
Preferably, the divergent segment 44 defines the acquisition opening Oa′, preferably the adapter opening Oa.
Preferably, the divergence is sufficient that, in the acquisition configuration, for example in the default configuration of the cell phone 12, the divergent segment is not visible to the lens 16 in the acquisition position.
To limit the space requirement, the chamber 28, preferably the spacer 24, preferably comprises at least one segment 45 which converges, preferably regularly, toward the oral opening Oa. In one embodiment, the converging segment ends less than 5 cm, less than 3 cm, less than 1 cm from the oral opening, and preferably defines the oral opening.
In one embodiment, the spacer 24 comprises a said divergent segment 44 and a said converging segment 45. Advantageously, the representation of the spacer 24 in the view seen by the lens 16 may be reduced, which facilitates focusing by the cell phone 12.
Preferably, at least in the zone of the spacer 24 which is visible in the view seen by the lens 16, the spacer 24 has a gray color.
Preferably, the gray color comprises, in RGB (Red, Green, Blue) code, substantially the same value for red, green and blue, the maximum difference between the values for red, green and blue preferably being less than 10, preferably less than 5, preferably substantially zero. Preferably, these values are between 50 and 210, preferably between 70 and 190, more preferably between 90 and 170, preferably between 140 and 160. For example, the gray color may be close to (120, 120, 120), or (150, 150,150).
Surprisingly, the inventors have discovered that the analysis of the color of the teeth in realistic color photos is thereby facilitated and improved. The photos acquired are therefore well suited to colorimetric analysis.
Without being bound by this theory, the inventors explain this result by the fact that gray is a neutral color, which does not alter colors during an acquisition. To be specific, the settings conventionally used by cell phones may modify the colors in the photo, in particular by shifting the balance of whites.
As shown in
The width 124 of the body 40 of the spacer 24, that is to say its largest dimension in a transverse plane, considering all of the transverse planes along the axis X24, is preferably greater than 2 cm and/or less than 10 cm.
The height h24 of the body 40 of the spacer 24, that is to say its smallest dimension in a transverse plane, considering all of the transverse planes along the axis X24, is preferably greater than 2 cm, preferably greater than 4 cm, preferably greater than 6 cm, preferably greater than 7 cm and/or less than 10 cm, preferably less than 9 cm.
The spacer 24 preferably comprises a distal flange 46 extending outwards, at the periphery of the oral opening Oa and from the outer surface of the body 40, adapted to be inserted between the lips and the teeth of the user.
Advantageously, the lips may thus be moved away so as not to block the oral opening Oa. Furthermore, the distal flange 46 facilitates retention of the spacer 24 in the user's mouth.
The distal flange 46 is preferably made in one piece with the body 40 of the spacer 24, which limits manufacturing costs and limits the number of corner edges. Hygiene is thereby improved.
The distal flange 46 may be overmolded on the body 40.
It may be made of elastomer, for optimal comfort.
Preferably, the distal flange 46 is flat, that is to say has the shape of a blade, preferably of constant thickness.
Preferably, the distal flange 46 extends substantially radially relative to the axis X24 of the oral opening Oa, that is to say in a plane perpendicular to the axis X24. Advantageously, the acquisition of data using the cell phone 12 is thus possible, ergonomically, when the spacer 24 is held horizontally.
Preferably, as shown in
When the oral opening is curved, it may thus be inclined with respect to a plane perpendicular to the axis X24.
The distal flange 46 may surround the body 40 partially or completely.
Preferably, it comprises a right portion and a left portion, intended to rest on the right and left commissures of the user's lips, and defining right 46d and left 46g lateral ends, respectively.
These right and left portions effectively limit the risk of the lips escaping when the holder is rotated about the user, to the user's right or left, to acquire photos of the teeth at the back of the mouth, particularly the molars.
The distance I46 between the right 46d and left 46g lateral ends is preferably greater than 40 mm, preferably greater than 50 mm, and/or preferably less than 80 mm, preferably less than 70 mm. Advantageously, these dimensions allow, in the service position, the spacer to be moved laterally to the right and left of the user, but also allow the user to bring their jaws together into the occlusion position in which the user's upper and lower teeth are in contact. Preferably, the oral opening is curved in such a way that the right 46d and left 46g lateral ends are separated from the plane Po by a distance d46, preferably by the same distance d46, as shown in
Preferably, the ratio I46/d46 between the distance between the lateral ends of the distal flange and the distance between said lateral ends and the plane Po is between 5 and 8. When the acquisition kit comprises several different spacers, said spacers preferably have different ratios.
The distal flange 46 may be interrupted, as in the embodiment shown, or include a notch, in such a way as to leave free the labial frenulum on the upper and lower arches of the user. The interruption or the notch also allows the spacer 24 to be moved in the mouth of the user, in particular rotations about the dental arches for the acquisition of photos or 3D models in lateral views.
The notch may for example have a triangular, rounded or rectangular shape.
The length d46 of the interruption or of the notch is preferably greater than 3 mm, greater than 5 mm, even greater than 10 mm, or even greater than 15 mm, and/or less than 50 mm, preferably less than 30 mm, preferably less than 20 mm (
The maximum height h46 of the distal flange 46 is preferably greater than 1 mm, greater than 2 mm, greater than 3 mm, and/or less than 10 mm, 8 mm, or 6 mm.
As shown in
Preferably, as shown in
The divergent segment is preferably defined by a part of the wall of the spacer which has a constant thickness.
In one embodiment, the distal flange 46 is removable. In particular, it may be produced in the form of a dental retractor.
Preferably, the body 40, preferably the entire spacer 24, is made of an opaque material. Advantageously, the external environment does not interfere with the lighting of the teeth by the cell phone 12. The body 40 also protects the user's privacy.
The body 40 and/or the distal flange may be made of a rigid material, for example polyethylene PE, polyethylene terephthalate PET, polystyrene PS or polypropylene PP, or a flexible material, for example cardboard.
In one embodiment, the body 40, preferably the entire spacer 24, is made of a recyclable, preferably biodegradable, material preferably according to European standard EN13432, with a residue after 6 months of less than 10%, preferably less than 5%, preferably less than 1%. Preferably, more than 50%, 70%, 80%, or 90% of the spacer 24, as a percentage by weight, is biodegradable.
The material may in particular be a fibrous material, preferably cellulose-based, preferably cardboard.
The spacer may be single-use or disposable.
Also preferably, the spacer 24 is in one piece. Advantageously, its manufacturing cost is thereby limited.
The adapter 26, shown in particular in
The cell phone 12 may be attached to the adapter 26 for example with one or more elastic bands, one or more hook-and-loop tapes, one or more clips, one or more screws, a flap, for example rotatably mounted on the base of the adapter and lockable in a position in which it clamps the cell phone 12, jaws, one or more suction cups or one or more magnets.
The flap may be held against the cell phone so as to hold it in position, by any means, for example by means of one or more clip(s), screw(s), hook-and-loop tape(s) of Velcro® type, elastic band(s), magnet(s), hook(s), bolt(s), strap(s), suction cup(s), in particular microsuction cup(s) or nanosuction cup(s), or an adhesive material, for example a gel.
The cell phone may also be inserted in a shell, a cover or a case, attached to the base of the adapter. The case, for example made of plastic, may be provided with a door mounted rotatably, preferably about a horizontal or vertical axis. The shape of the cover or the case is not limiting, provided that it allows the lens 16 to see outside the cover or the case and, preferably, leaves the screen visible from outside the cover or the case.
The case or the cover or the shell may for example be attached to the base by any means, for example by complementarity of shapes, or by means of one or more clip(s), screw(s), hook-and-loop tape(s) of Velcro® type, elastic band(s), magnet(s), hook(s), bolt(s), strap(s), suction cup(s), in particular microsuction cup(s) or nanosuction cup(s), or an adhesive material, for example a gel. The case or the cover may be made in one piece with the base.
In one embodiment, the adapter comprises a strap, preferably elastic, preferably made of elastomer, preferably transparent, for attaching the cell phone.
This list of examples is not limiting.
An “unobstructed” surface of the screen 20 is a surface which is not covered by the adapter 26. If part of the adapter 26 made of a transparent material, for example a transparent strap, covers a surface of the screen, this surface is not considered to be “unobstructed”.
The adapter 26 is preferably configured so as, in the assembled position, to leave unobstructed more than 80%, preferably more than 90%, preferably more than 95%, preferably substantially 100% of the surface of the screen 20 of the cell phone.
The surface of the adapter 26 which is in contact with the cell phone 12 in the assembled position is referred to as the “contact surface”.
Preferably, more than 70%, more than 80%, preferably more than 90%, preferably substantially 100% of the contact surface is in contact with the front face 121 and the side edge 22 of the cell phone, preferably the side edge 22 of the cell phone.
A portion of the contact surface may be in contact with the rear face of the cell phone, or with the screen 20. Preferably, the area of this portion of the contact surface represents less than 20%, preferably less than 10%, preferably less than 5%, preferably less than 2% of the area of said rear face, and is preferably zero. Preferably, the area of this portion of the contact surface represents less than 20%, preferably less than 10%, preferably less than 5%, preferably less than 2% of the area of said screen 20.
Preferably, the contact surface does not cross the screen 20 from one edge of the rear face 122 to an opposite edge of the rear face 122. In particular, the contact surface does not cross the screen vertically. Preferably, in the assembled position, the cell phone is not encircled by the adapter 26, as is the case when a strap or a flap bears on the rear face to press the cell phone against a receiving face of the adapter 26.
A “visible” surface of the screen 20 is a surface which is not covered by the adapter 26 or which is covered by a transparent part of the adapter, such that it is possible to see the screen through it. If part of the adapter 26 made of a transparent material, for example a transparent strap, covers a surface of the screen, this surface is thus considered to be “visible”. Preferably, tactile communication with the screen is possible through said parts of the adapter 26 made of a transparent material.
A surface of the screen 20 which is not “visible” is said to be “concealed”.
The adapter 26 is preferably configured so as, in the assembled position, to leave visible more than 80%, preferably more than 90%, preferably more than 95%, preferably substantially 100% of the surface of the screen 20 of the cell phone.
Advantageously, the screen 20 thus makes it possible to see the teeth perfectly. In addition, the entire touch-sensitive man-machine interface is advantageously accessible.
Also preferably, the adapter 26 is configured to allow the attachment of different cell phones, and in particular cell phones having different dimensions.
In a preferred embodiment, the cell phone 12 is held on the adapter 26 by clamping.
In particular, preferably, the adapter 26 comprises a base 50, a first jaw 521 and a second jaw 522, opposite the first jaw, at least the first jaw being movably mounted on the base 50 between moved-together and spaced-apart positions in which the first jaw is at minimum and maximum distances from the second jaw, respectively.
Preferably, only the first jaw is movably mounted on the base 50. The second jaw is stationary relative to the base. Advantageously, the mechanism for bringing the jaws together and then locking them in position is thereby simplified and made more compact.
The saving in terms of compactness is particularly beneficial for a kit according to the invention, which must allow the use of the lens of the cell phone positioned on the front face of the phone.
The stationary nature of the second jaw also makes it possible to position the cell phone in its permanent position before the two jaws are brought together to clamp the cell phone. The operation of attaching the cell phone is thereby considerably simplified, in particular because it is not necessary to hold the cell phone while bringing the jaws together.
This also prevents destabilization.
In the spaced-apart position, the maximum distance d52 between the first and second jaws is preferably greater than 5 cm, preferably greater than 7 cm, preferably greater than 9 cm, and/or less than 25 cm, preferably less than 15 cm (
In the moved-together position, the minimum distance d52 between the first and second jaws is preferably greater than 2 cm, preferably greater than 3 cm, preferably greater than 5 cm, and/or less than 10 cm, preferably less than 8 cm.
The movement of the first jaw toward the second jaw, or “approach movement”, results in the assembled position, generally intermediate between the moved-together and spaced-apart positions, in which the first and second jaws grip and clamp the cell phone 12, preferably by pressing on the side edge 22 of the cell phone.
The first jaw 521 is preferably mounted to move in translation relative to the second jaw, in a clamping direction Z52, preferably vertical in the service position.
Preferably, the first jaw 521 is mounted so as to be elastically movable in translation relative to the second jaw 522, in the clamping direction. Preferably, the adapter 26 comprises an elastically deformable member, preferably a spring 56, preferably a compression spring, arranged in such a way as to oppose a thrust of the first jaw 521 toward the moved-together position.
In
Advantageously, the risk of instability is reduced.
Preferably, however, the adapter 26 comprises a single spring 56, preferably a compression spring, which extends in the clamping direction, at a point halfway across the width of the first and second jaws 521 and 522. Compactness is advantageously thereby improved.
The second jaw 522 may be movable on the base 50. However, preferably, the base 50 incorporates the second jaw, as shown in
As shown in
Advantageously, the first and second jaws thus not only clamp the cell phone, but also retain the latter by complementarity of shapes. Holding of the cell phone 12 is thereby improved. The trough shape also promotes sliding of the cell phone between the first and second jaws, parallel to the direction Y52. Such sliding makes it possible to position the lens 16 such that the optical axis X16 is in the vertical plane containing the axis Xa of the adapter opening.
Preferably, the base 50 comprises a receiving face 54, preferably flat, preferably vertical, on which the cell phone rests in the assembled position. This flat surface is preferably defined by a mat 58 made of elastomer. It preferably extends as far as the second jaw. Advantageously, the fact that the cell phone rests on the receiving face 54 contributes to the holding of the cell phone, in particular by limiting sliding between the first and second jaws.
Preferably, the movement of the cell phone 12 placed between the first and second jaws is not limited by any stops, which makes it possible to put in place a cell phone of any length.
Preferably, at least the first jaw 521 is mounted in such a way as to be movable on the base 50 incrementally.
Preferably, the adapter 26 comprises a first deactivatable non-return system preventing a separation movement of the first jaw, that is to say a movement in the opposite direction to an approach movement. The first non-return system preferably comprises, as shown in
The successive positions of the first jaw during a translational movement in the clamping direction Z52, referred to as the “indexed positions”, are marked by the elastic penetration of the first pawl 62 between the successive teeth of the ratchet wheel 64.
The coupling of the ratchet wheel 64 and the first jaw 521 may be ensured by a rack and pinion assembly.
Preferably, the first jaw 521 is provided with a first rack 68 extending parallel to the clamping direction and the adapter 26 comprises a stepped wheel 70 mounted rotatably, about the axis X64, on the base 50, and comprising
Advantageously, such a stepped wheel is particularly compact and allows incremental and well-controlled movement of the first jaw.
The adapter 26 preferably includes a first push button 74, pressing of which causes deactivation of the first non-return system.
Preferably, the first pawl 62 is coupled to the first push button 74 in such a way that actuation of the push button (by pressing the push button) causes the first pawl 62 to disengage from the ratchet wheel. In a preferred embodiment shown in
The first non-return system thus forms a lock for selectively locking in position or allowing the movement of the first jaw 521 on the base 50.
As described above, preferably, the first jaw 521 is movably mounted on the base 50 in such a way as to move away elastically from the second jaw. Deactivation of the first non-return system therefore causes elastic return to a spaced-apart position.
Advantageously, elastic return of the first jaw 521 to the spaced-apart position considerably facilitates the mounting of the cell phone 12 on the adapter 26.
Preferably, at least one of the first and second jaws, preferably each of the first and second jaws, comprises a pad 78 made of elastomer which, in the assembled position, bears on the cell phone 12.
Preferably, the pad 78 is configured such that, when the first jaw is incrementally movable on the base 50 and the pad 78 begins to clamp the cell phone, elastic deformation of the pad makes it possible to reach the next indexed position. Advantageously, the clamping of the cell phone makes it possible to effectively clamp the phone, without damaging the latter. The pad 78 also helps to protect the cell phone against shocks and vibration.
Preferably, the clamping zone 71 via which the cell phone 12 is clamped by the first and second jaws is exclusively defined by pads 78.
The clamping zone 71 is made up of a set of clamping points. At each of these points, the adapter exerts a compressive force, referred to as the “clamping” force, on the cell phone 12. The greatest distance between clamping points, measured in the direction of the length L2 of the cell phone, is preferably greater than 1 cm, preferably greater than 2 cm, greater than 3 cm, and/or less than 20 cm, preferably less than 10 cm, preferably less than 8 cm, preferably less than 6 cm, preferably less than 5 cm.
Preferably, at least one “basic” clamping zone (that is to say the part of the clamping zone defined by a jaw), preferably each basic clamping zone, has an overall length L52 greater than 1 cm, preferably greater than 2 cm, greater than 3 cm, and/or less than 20 cm, preferably less than 10 cm, preferably less than 8 cm, preferably less than 6 cm, preferably less than 5 cm. “Overall length” means the greatest distance between two points in the basic clamping zone, in the direction Y52. In particular, the overall length does not change if the basic clamping zone is locally interrupted between these two points.
In the embodiment shown in
Advantageously, the attachment of the cell phone 12 to the adapter 26 is particularly stable. The kit may thus be handled by holding the phone, which facilitates the acquisition of data through the lens 16 of the cell phone.
The basic clamping zone of the first jaw and/or of the second jaw preferably extends in the direction of the length of the cell phone.
Preferably, as shown in
Sliding may be achieved by means of a slider, for example borne by the plate 80, mounted slidably in a rail formed in the base 50. Sliding by means of several sliders mounted slidingly in respective parallel rails may be achieved to limit the risk of instability.
Advantageously, the position of the adapter opening Oa relative to the lens 16 may thus be modified.
Preferably, the ability of the plate 80 to move on the base 50 is independent of the ability of the first jaw to move on the base 50, and more generally independent of the position of the cell phone 12 on the adapter 26.
The cell phone 12 is rigidly attached to the plate 80 by clamping, removably, between the first and second jaws.
The position of the cell phone 12 relative to the adapter opening Oa may therefore be adjusted independently, horizontally by sliding between the first and second jaws, and vertically by sliding the plate 80 on the base 50, until the lens 16 is positioned opposite the adapter opening Oa, preferably substantially at the center of the adapter opening Oa.
The adapter opening Oa is preferably of a size such that, at least in this centered position of the lens 16, the flash 18 faces the adapter opening Oa. Advantageously, the flash 18 may thus illuminate the teeth during the acquisition of 2D or 3D data by the cell phone 12.
The plate 80 is preferably mounted in such a way as to be movable on the base 50 incrementally. In other words, at least in one direction, it may be moved in increments, preferably in constant increments. Advantageously, the adjustment of the position of the adapter opening Oa relative to the cell phone is thereby facilitated.
Preferably, the adapter 26 includes a deactivatable lock for selectively locking the plate 80 in position relative to the base 50.
Preferably, the base 50 comprises a second rack 82 and the plate 80 comprises
Preferably, the second rack 82 and the second pawl 84 are shaped in such a way as to allow the plate 80 to move in translation in one direction only, namely, in
The second rack 82 and the second pawl 84 thus define a second deactivatable non-return system preventing a return movement, in this case a downward movement, of the plate 80 with respect to the base 50.
The adapter 26 preferably includes a second push button 94, pressing of which causes deactivation of the second non-return system.
Preferably, the second pawl 84 is coupled to the second push button 94 in such a way that actuation (by pressing the second push button 94) causes the second pawl 84 to disengage from the second rack 82. In a preferred embodiment shown in
The second non-return system thus forms a lock for selectively locking in position or allowing the movement of the plate 80 on the base 50.
Of course, in an equivalent manner, the second rack 82 could be on the plate 80 and the second pawl 84 mounted on the base 50.
In a preferred embodiment, a reference mark, made on the adapter, indicates possible positions of the cell phone 12 with respect to the base 50 and/or of the plate 80 with respect to the base 50, for example depending on the type or brand of the cell phone. The reference mark may for example be an arrow associated with a brand of cell phone.
Preferably, the plate 80 includes a first reference mark and the base includes one or more second reference marks opposite which the first reference mark may be positioned, or, equivalently, the base 50 includes a first reference mark and the plate 80 includes one or more second reference marks opposite which the first reference mark may be positioned. Preferably, the second reference marks correspond to cell phone brands. In other words, to correctly position a cell phone on the holder, all that is required is to position the first reference mark opposite the second reference mark corresponding to the brand of this cell phone.
Preferably, the acquisition opening Oa′ is laterally offset with respect to the clamping zone in which the cell phone 12 is clamped to the adapter 26, as shown in
The lateral offset is determined by looking at the adapter 26 from the front, that is to say parallel to the axis of the acquisition opening Oa′ (
The offset direction Y is the horizontal direction, parallel to the plane of the front face of the cell phone.
In the offset direction Y, the positions pa′ and ps of the center Ca′ of the acquisition opening Oa′ and the center Cs of the clamping zone, respectively, may be identified. The lateral offset is measured by the distance d1, in the offset direction Y (
Preferably, the lateral offset is constant.
Preferably, the lateral offset is greater than 1 cm, preferably greater than 1 cm, preferably greater than 3 cm, or even greater than 4 cm, or greater than 5 cm, and/or less than 10 cm. Advantageously, the lateral offset allows the acquisition opening Oa′ to be positioned facing the lens 16 and allows the cell phone to be firmly attached to the adapter 26 even if the lens 16 is very close to an edge of the front face. This attachment is particularly effective because the clamping zone may be substantially halfway along the length of the cell phone 12 while the acquisition opening or the adapter opening is close to the lateral edge of the cell phone 12.
In one embodiment, the cell phone is clamped via its two large sides and held horizontally for the acquisition of images or 3D models, as shown in
The way in which the kit operates ensues directly from the preceding description.
Initially, the kit is in the disassembled position. Where applicable, the user selects a spacer 24 from among several spacers, according to the personalization mark 39.
The user clips the spacer 24 onto the adapter 26, inserting the end of the spacer 24 opposite the oral opening Oa into the housing of complementary shape defined by the adapter.
Clipping is achieved by hooking the claws of the adapter in the recesses made on the outer surface of the spacer 24.
After clipping, the spacer extends substantially up to the adapter opening Oa defined by this housing. It thus defines a lining which limits contact between the wall defining this housing and the air breathed when in the service position.
If the first and second jaws are too close to one another to put the cell phone in place, the user presses the first push button 74 to disengage the first pawl 62 from the ratchet wheel 64. Under the action of the compression spring 56, the first jaw 521 moves away from the second jaw and reaches the spaced-apart position. The user then stops pressing the first push button 74.
The distance d52 between the first and second jaws is thus greater than the width of the cell phone 12. The user then places the cell phone 12 on the mat 58, resting on the second jaw 522, then moves it laterally, along the second jaw, until the adapter opening Oa is substantially in line with the lens 16, that is to say above or below the lens 16. The lateral offset of the first and second jaws relative to the adapter opening makes it possible to achieve this position without substantially shifting clamping away from the middle of the length of the cell phone.
Next, the user pushes the first jaw back until it comes into contact with the side edge of the cell phone, so as to grip it with the second jaw.
As the jaws thus move toward one another, the first rack 68 drives the pinion 72, and therefore the stepped wheel 70 and the ratchet wheel 64. The first pawl 62, pushed by the first spring 66, engages the ratchet wheel 64 and prevents any separation movement of the first and second jaws. It also allows incremental movement of the first jaw, in other words movement “in increments”.
When the first jaw comes into contact with the side edge of the cell phone, the reaction of the cell phone opposes continuation of the approach movement. The deformation of the pads 78, however, allows the first jaw to be pushed at least to the next notch (the first pawl 62 engaging with the next tooth on the ratchet wheel).
The cell phone 12 is thus rigidly attached to the base 50, clamped between the first and second jaws. The screen 20 is completely unobstructed.
The user then adjusts the vertical position of the plate 80 on the base 50, such that the adapter opening is substantially opposite the lens 16.
In the embodiment of
If the plate 80 is too high, the user presses the second push button 94 to disengage the second pawl 84 from the second rack 82. They may then lower the plate 80. As soon as the user releases the second push button 94, the pawl again engages the second rack 82, under the action of the second spring 86.
Once the adapter opening Oa is substantially opposite the lens 16, and preferably the flash, the kit, in the acquisition position, is ready for use.
The user then activates the cell phone so that it may be used to acquire images or 3D models. They may advantageously use the screen 20, which is completely unobstructed.
The user then inserts the distal flange 46 between their lips and their teeth and positions the oral opening facing the teeth for which they want to acquire data, preferably take photos or acquire a scan. The user is thus in a service position. By pressing the shutter release on the cell phone, the user acquires this data.
The user then moves the oral opening to acquire data for other teeth.
The spacer does not prevent the user's jaws from moving closer together or apart. It thus allows the acquisition in particular of photos showing the teeth of the user, while the user has their mouth open or their mouth closed, keeping the lips pushed back.
By pivoting the kit about themselves, the user allows the cell phone to see different regions of their mouth, for example to take photos of the dental arch or the teeth at the back of the mouth.
Preferably, the user acquires 2D or 3D data in at least a front view, a right-hand view and a left-hand view. Preferably, the user acquires 2D or 3D data in at least one mouth open view and at least one mouth closed view, preferably each time in front, right-hand and left-hand views.
The user then takes the spacer 24 from their mouth, and removes the cell phone. To this end, all that is required is to press the first push button 74 to disengage the first pawl 62 from the ratchet wheel 64. Under the action of the spring 56, the first jaw 521 moves away from the second jaw and reaches the spaced-apart position, making it possible to take out the cell phone 12.
The user may then analyze the data acquired and/or transmit same using the cell phone 12.
Lastly, the user separates the spacer 24 from the adapter 26 by pulling hard enough on the spacer to disengage the claws 38.
Generally, only the spacer needs to be cleaned, or sterilized. Advantageously, it does not include any moving part the operation of which might be affected by these operations.
It also does not have any re-entrant corner edges likely to trap dirt. Cleaning or sterilization is therefore more effective.
Naturally, the order of the operations may be changed. For example, the user may attach the spacer to the adapter before or after attaching the cell phone. The spacer may be removed before or after the cell phone.
As is now clear, the invention considerably facilitates the acquisition of photos or 3D models, including showing the vestibular surfaces of molars, in particular for the implementation of the method described in PCT/EP2015/074896. It allows rapid acquisition, in extremely hygienic conditions, typically in less than a minute, without the need for specialized personnel, specifically a dentist or an orthodontist. The acquisition may in particular be carried out by the user themselves or by a friend or relative, simply using a cell phone, anywhere, and in particular without visiting a medical, dental or orthodontal practice. In addition, acquisition is possible without the use of a tool that rests on the ground to immobilize the cell phone, specifically without a tripod.
Lastly, the kit allows the cell phone to be attached quickly and reliably, whatever its thickness, without the risk of damaging it.
Naturally, the invention is not limited to the embodiments described and illustrated, which are provided purely for illustrative purposes.
In particular, the shape of the spacer is not limiting.
The second jaw may be movable, and optionally mounted on the base like the first jaw.
In one embodiment, the first jaw 521 is movably mounted on the base 50 in such a way as to elastically approach the second jaw. The first non-return system may then be designed to prevent this approach, its deactivation causing elastic return to a moved-together position.
| Number | Date | Country | Kind |
|---|---|---|---|
| FR2101504 | Feb 2021 | FR | national |
The present invention relates to an acquisition kit, and in particular a kit for acquiring dental photos, in particular for the implementation of a method as described in international application PCT/EP2015/074896.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2022/053847 | 2/16/2022 | WO |
