Intraoral sensor and X-ray imaging system

Abstract

The utility model belongs to the technical field of medical equipment, and relates to an intraoral sensor and an X-ray imaging system, the intraoral sensor comprises a housing, a positioning assembly, a circuit assembly and a photosensitive assembly; the shell comprises a first section and a second section which are arranged at an angle to each other, and the first section and the second section are respectively positioned outside and inside an oral cavity when working; the positioning assembly is connected to the first section, and the positioning assembly and the second section are oppositely located at the two ends of the first section; the photosensitive assembly is installed on the second section, the circuit assembly comprises a circuit board with a wireless transmission module, and the photosensitive assembly is electrically connected with the circuit board. According to the scheme provided by the utility model, foreign body sensation brought by the intraoral sensor in the oral cavity can be reduced, external connection wires can be omitted, the external connection wires are prevented from influencing operation of doctors, and the operation efficiency of the doctors is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field more specifically, relate to an intraoral sensor and X ray imaging system. BACKGROUND

[0002] The existing dental imaging component includes an extraoral X-ray machine and an intraoral sensor, the extraoral X-ray machine is used for emitting X-rays, and the intraoral sensor is a digital image receiving sensor, the part in the mouth of the digital image receiving sensor is used for receiving X-rays and converting into an electric signal, and finally outputting dental imaging (dental film) in the client software, the digital image receiving sensor is more sensitive to X-rays, and the radiation dose absorbed by the patient can be reduced.

[0003] When actually shooting a dental film, in order to ensure that the intraoral sensor is correctly placed at an angle and position, an additional positioner needs to be relied on to assist the X-ray machine in positioning the position of the intraoral sensor, the additional positioner needs to have a clamping structure to clamp the intraoral sensor, the clamping structure and the intraoral sensor are both placed in the patient's mouth, which makes the patient feel heavy in the mouth, affects the user experience, and the intraoral sensor needs a transmission line to output an electric signal to a display screen for imaging, which limits the doctor's operation area and reduces the doctor's operation efficiency. SUMMARY

[0004] The utility model embodiment wants to solve the technical problem that the prior art has poor user experience and low operation efficiency.

[0005] In order to solve the above technical problem, the utility model embodiment provides an intraoral sensor, which comprises a shell, a positioning assembly, a circuit assembly and a photosensitive assembly.

[0006] The shell comprises a first section and a second section arranged at an angle to each other, and the first section and the second section are respectively located outside and inside the oral cavity when working.

[0007] The positioning assembly is connected to the first section, and the positioning assembly and the second section are located at both ends of the first section in opposition.

[0008] The photosensitive assembly is installed on the second section, and the circuit assembly comprises a circuit board with a wireless transmission module, and the photosensitive assembly is electrically connected with the circuit board.

[0009] Further, the positioning assembly comprises a positioning ring and a connecting arm connected to each other.

[0010] The connecting arm is sleeved with the first section, and the central axis of the positioning ring is perpendicular to the photosensitive surface of the photosensitive assembly.

[0011] Further, a wall gap d between the first segment and the connecting arm satisfies: 0mm < d ≤ 0.2mm.

[0012] Further, the positioning assembly comprises a positioning ring and a connecting arm connected with each other, and the shell comprises a first half shell and a second half shell.

[0013] The first segment is sleeved on the connecting arm, and an inner wall of the first half shell and / or the second half shell is provided with at least one locking part.

[0014] The connecting arm is provided with a locking structure, and the locking structure cooperates with the at least one locking part to lock the first segment and the connecting arm.

[0015] Further, the locking part is a groove.

[0016] The connecting arm is a tubular structure, the locking structure is arranged in an inner cavity of the connecting arm, and the locking structure is partially embedded in the groove to lock the first segment and the connecting arm.

[0017] Further, the locking structure comprises a ball and a spring, one end of the spring is fixed to an inner wall of the connecting arm, the other end of the spring is connected to the ball, the connecting arm is provided with a second through hole, a diameter of the second through hole is smaller than a diameter of the ball, the ball partially extends out of the second through hole and extends into the groove to lock the first segment and the connecting arm.

[0018] Further, the connecting arm comprises a first half arm and a second half arm connected with each other.

[0019] The second half arm is provided with a positioning column for fixing the spring, and the first half arm is provided with the second through hole opposite to a position of the positioning column.

[0020] At least one of the first half arm and the second half arm is fixedly connected with the positioning ring.

[0021] Further, a plurality of the locking parts arranged on the first half shell are distributed along an axial direction of the first segment; and / or,

[0022] A plurality of the locking parts arranged on the second half shell are distributed along an axial direction of the first segment.

[0023] Further, the shell comprises a first half shell and a second half shell.

[0024] The first segment has a first mounting position for mounting the circuit assembly, and the second segment has a second mounting position for mounting the photosensitive assembly.

[0025] The first mounting position and the second mounting position are cavities formed by the first half shell and the second half shell, and a connecting passage is arranged between the two cavities, and a connecting line connecting the circuit board and the photosensitive assembly is arranged in the connecting passage.

[0026] Further, the circuit board is fixed to the first half shell or the second half shell; and / or,

[0027] The circuit assembly further comprises a power supply unit electrically connected with the circuit board, and the power supply unit is fixed to the first half shell or the second half shell.

[0028] Further, the circuit board comprises a charging interface, and a first through hole for mounting the charging interface is arranged on the first half shell or the second half shell.

[0029] The utility model embodiment further provides an X ray imaging system, including X ray machine and the in-mouth sensor described above.

[0030] Compared with the prior art, the utility model embodiment has the following beneficial effects:

[0031] The photosensitive assembly and the rest of the in-mouth sensor are arranged separately, the photosensitive assembly is mounted on the second section, the positioning assembly is mounted on the first section, the relative positions of the photosensitive assembly and the positioning assembly can be kept relatively fixed during the process of placing the second section of the in-mouth sensor into the oral cavity, positioning deviation can be avoided, only the second section provided with the photosensitive assembly is placed in the oral cavity during operation, the foreign body sensation caused by the in-mouth sensor in the oral cavity can be reduced, the user experience is good, the external connecting line can be omitted through the arrangement of the wireless transmission module, the limitation of the operation area of the doctor and the influence of the external connecting line on the operation of the doctor are avoided, and the operation efficiency of the doctor is effectively improved, in addition, the positioning assembly is connected to the first section, the position of the photosensitive assembly can be directly positioned by the X ray machine, no additional clamping structure is needed, and the positioning accuracy is high. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the scheme of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0033] Figure 1 It is an explosion schematic view of the in-mouth sensor of the utility model embodiment;

[0034] Figure 2 It is Figure 1 It is a cross-sectional schematic view of the in-mouth sensor in the utility model;

[0035] Figure 3 is Figure 1 is an exploded schematic view of the intraoral sensor (omitting the positioning assembly);

[0036] Figure 4 is Figure 2 is an enlarged schematic view of A in the middle;

[0037] Figure 5 is an exploded schematic view of the positioning assembly of the utility model embodiment;

[0038] Figure 6 is an exploded schematic view of the light sensing assembly of the utility model embodiment;

[0039] Figure 7 is a structural schematic view of the X-ray imaging system of the utility model embodiment.

[0040] Reference signs:

[0041] 10 - shell; 10a - first section; 10b - second section; 11 - first half shell; 111 - groove; 12 - second half shell; 101 - first mounting position; 102 - second mounting position; 103 - first through hole; 20 - positioning assembly; 21 - positioning ring; 22 - connecting arm; 221 - first half arm; 221a - second through hole; 222 - second half arm; 23 - ball; 24 - spring; 25 - positioning column; 30 - circuit assembly; 31 - circuit board; 32 - connecting line; 33 - power supply unit; 34 - charging interface; 40 - light sensing assembly; 41 - PCB board; 42 - fixing layer; 43 - conversion layer; 44 - receiving layer; 45 - waterproof layer; 46 - reflecting layer; 100 - intraoral sensor; 200 - X-ray machine. DETAILED DESCRIPTION

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs; the terms used in the specification of the utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model; the terms "include" and "have" and any variations thereof in the specification of the utility model and claims and the above description of drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification of the utility model and claims or the above description of drawings are used to distinguish different objects, not to describe a particular order.

[0043] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with other embodiments.

[0044] Reference is made to Figure 1 , Figure 2 and Figure 3 , the application provides an intraoral sensor, comprising a shell 10, a positioning assembly 20, a circuit assembly 30 and a photosensitive assembly 40; the shell 10 comprises a first segment 10a and a second segment 10b arranged at an angle with each other, that is, the shell 10 is curved as a whole, and the first segment 10a and the second segment 10b are located outside and inside the oral cavity respectively during work; the positioning assembly 20 is adjustably connected to the first segment 10a, and the positioning assembly 20 and the second segment 10b are located at both ends of the first segment 10a in opposition; the photosensitive assembly 40 is installed at the second mounting position 102 of the second segment 10b, and the circuit assembly 30 comprises a circuit board 31 with a wireless transmission module, and the photosensitive assembly 40 is electrically connected with the circuit board.

[0045] In a specific embodiment, the first segment 10a and the second segment 10b are arranged perpendicular to each other, which is beneficial for dental film shooting.

[0046] The photosensitive assembly 40 and the circuit assembly 30, the positioning assembly 20 and other parts in the intraoral sensor of the application are arranged separately, which can reduce the component stacking at the position of the photosensitive assembly 40, and only the second segment 10b provided with the photosensitive assembly 40 is placed in the oral cavity during work, so that the part placed in the oral cavity can be thinnest, the foreign body sensation caused by the intraoral sensor in the oral cavity can be reduced, the experience of the patient can be improved, and by providing the wireless transmission module, the digital signal received by the photosensitive assembly 40 after conversion of X-ray into digital signal can be transmitted externally (such as a computer) through the wireless transmission module, and the dental film generated according to the electric signal can be displayed on the external device, so that the external connecting line for transmitting data can be omitted, the limitation of the operation area of the doctor and the influence of the connecting line on the operation of the doctor can be avoided, and the operation efficiency of the doctor can be effectively improved. In addition, the positioning assembly 20 is connected to the first segment 10a, and can directly assist the X-ray machine in positioning the position of the photosensitive assembly 40, without the need for an additional positioner, and the positioning accuracy is high. In particular, in the embodiment, the first segment 10a and the second segment 10b are directly connected, the photosensitive assembly 40 is installed on the second segment 10b, and the positioning assembly 20 is installed on the first segment 10a, so that the clamping structure of the photosensitive assembly 40 is omitted, the relative position of the photosensitive assembly 40 and the positioning assembly 20 can be kept relatively fixed during the process of placing the intraoral sensor in the oral cavity, and the positioning deviation can be avoided.

[0047] In one embodiment, as shown in Figure 1 and Figure 2 as shown, in combination Figure 3 and Figure 4 as shown, the first section 10a has a first mounting position 101 for mounting the circuit component 30, and the second section 10b has a second mounting position 102 for mounting the photosensitive component 40; both the first mounting position and the second mounting position are cavities formed by the first half shell 11 and the second half shell 12, and the two cavities have a connecting channel, and the connecting line 32 connecting the circuit board and the photosensitive component 40 is located in the connecting channel. In this embodiment, the circuit component 30 and the photosensitive component 40 are respectively mounted in the two cavities of the first section 10a and the second section 10b, and the modular design structure is compact and reasonable in layout, which not only reduces the space occupation and facilitates the use in a narrow oral environment, but also makes the assembly and maintenance more convenient, and also effectively prevents moisture and dust from entering the sensor interior, prolongs the service life of the intraoral sensor, in addition, the connecting line 32 is protected in the connecting channel, avoiding the interference and damage of the external environment, improving the reliability and stability of the sensor.

[0048] In this embodiment, the connecting line 32 functions to transmit digital signals and power.

[0049] In one embodiment, as shown in Figure 3 and Figure 4 as shown, the shell 10 includes a first half shell 11 and a second half shell 12, and the first half shell 11 and the second half shell 12 each include a first part (not labeled in the figure) and a second part (not labeled in the figure) perpendicular to each other, wherein the first part of the first half shell 11 and the first part of the second half shell 12 constitute the first section 10a, and the second part of the first half shell 11 and the second part of the second half shell 12 constitute the second section 10b.

[0050] In this embodiment, the circuit board is fixed to the first half shell 11 or the second half shell 12. In a specific embodiment, the circuit board of this embodiment is fixed in the second half shell 12 by screws, and the circuit board is a PCBA board, and accordingly the PCBA board is located outside the oral cavity when working, avoiding the stacking of parts of the photosensitive component 40, and the photosensitive component 40 transmits digital signals to the PCBA board through the connecting line 32, and the PCBA board communicates with the computer through the wireless transmission module after processing, and the computer generates a dental film according to the digital signals for display; in addition, since the transmission line is omitted, the problem of easy damage of the transmission line and the transmission line port (such as USB port) leading to failure of the intraoral sensor is also avoided.

[0051] This embodiment forms a cavity by the first half shell 11 and the second half shell 12, and the circuit component 30 and the photosensitive component 40 are wrapped together to form a whole, which is compact in structure and not easy to be damaged, effectively improving the service life of the intraoral sensor.

[0052] In one embodiment, such as Figure 3 and Figure 4 As shown, the circuit assembly 30 also includes a power supply unit 33; the power supply unit 33 is electrically connected to the circuit board and is fixed to the first half-shell 11 or the second half-shell 12.

[0053] In a specific embodiment, the power supply unit 33 is fixed to the first half-shell 11 by screws. The power supply unit 33 is connected to the PCBA board via terminals, and the PCBA board supplies power to the photosensitive component 40. In this embodiment, the photosensitive component 40 is powered by the sensor's built-in power supply unit 33. Combined with the built-in wireless transmission module on the PCBA board, this eliminates the limitation of traditional sensors that require external wiring to connect to a computer for power supply and data transmission, avoiding interference from external wiring to the doctor's operation. Furthermore, the power supply unit 33 is located outside the oral cavity when working, avoiding the stacking of components in the photosensitive component 40.

[0054] In some embodiments, the power supply unit 33 is a rechargeable battery (e.g., an 18650 battery), correspondingly, such as Figure 4 As shown, the circuit board includes a charging interface 34, and the second half-shell 12 has a first through hole 103 for mounting the charging interface 34. In a specific embodiment, the charging interface 34 can be a DC circular interface, a Type-C interface, a Micro USB, a Mini USB, etc., and the battery can be charged through the charging interface 34 to improve the battery life of the sensor inside the port. In other embodiments, the first through hole can also be provided on the first half-shell 11.

[0055] In one embodiment, such as Figure 5 As shown, the positioning component 20 includes a positioning ring 21 and a connecting arm 22 connected to each other; the connecting arm 22 is sleeved with the first segment 10a, the central axis of the positioning ring 21 is perpendicular to the photosensitive surface of the photosensitive component 40, and the center of the photosensitive component 40 is located on the central axis.

[0056] In this embodiment, the positioning ring 21 can provide physical positioning to adapt to different models and functions of X-ray machines. The center of the photosensitive component 40 is located on the central axis of the positioning ring 21, so that in the X-ray irradiation direction, the center of the positioning ring 21 coincides with the center of the photosensitive surface of the photosensitive component 40. During imaging, aligning the X-ray machine's tube with the positioning ring 21 enables the positioning of the intraoral sensor within the oral cavity. This embodiment utilizes the positioning component 20 integrated into the intraoral sensor, eliminating the need for an additional positioning clamping device. Since there is no need to place the clamping device inside the patient's mouth, it effectively reduces the feeling of a foreign body and avoids misalignment caused by instability in the connection between the clamping structure and the intraoral sensor during insertion into the oral cavity, thus improving the quality of dental radiographs.

[0057] In a specific embodiment, when the connecting arm 22 is sleeved with the first section 10a, the connecting arm 22 can be inserted into the sleeve formed by the first section 10a, that is, the first section 10a is sleeved on the connecting arm 22 (see Figure 4 Of course, in other embodiments, the first section 10a can be inserted into the connecting arm 22 to form a sleeve, which is not limited herein.

[0058] In an embodiment, the first section 10a is sleeved on the connecting arm 22, and at least one locking portion is arranged on the inner wall of the sleeve section of the first section 10a and the connecting arm 22; the connecting arm 22 is provided with a locking structure which cooperates with the at least one locking portion to lock the first section 10a and the connecting arm 22. Of course, at least one locking portion can also be arranged on the inner wall of the sleeve section of the second half shell 12, or the locking portions can be arranged on both the first half shell 11 and the second half shell 12. In this embodiment, by cooperating the locking structure with different locking portions, the distance between the positioning ring 21 and the photosensitive assembly 40 can be adjusted to adapt to the shooting of the X-ray machine at different positions in the oral cavity and obtain clear dental films.

[0059] In a specific embodiment, referring back to Figure 4 and Figure 5 , the locking portion is a groove 111, which can be a curved groove.

[0060] In an embodiment, the connecting arm 22 is a tubular structure, and the locking structure is arranged in the inner cavity of the connecting arm 22, and the locking structure partially extends into the groove 111 to lock the first section 10a and the connecting arm 22. Specifically, referring back to Figure 4 and Figure 5 , the locking structure includes a ball 23 and a spring 24, one end of the spring 24 is fixed to the inner wall of the connecting arm 22, the other end is connected to the ball 23, a second through hole 221a is arranged on the connecting arm 22, the diameter of the second through hole 221a is smaller than the diameter of the ball 23, the ball 23 partially extends out of the second through hole 221a and is embedded in the groove 111, and cooperates with the groove 111 to lock the first section 10a and the connecting arm 22. This locking method is convenient for the installation, disassembly and fixation of the connecting arm 22. When the connecting arm 22 is to be disassembled, the connecting arm 22 is pulled out of the first section 10a along the axial direction of the first section 10a, the ball 23 is forced to slide out of the groove 111, and the spring 24 is compressed under the force. The ball 23 is recovered into the connecting arm 22, and the connecting arm 22 can be directly removed at this time. When the connecting arm 22 is to be installed, the connecting arm 22 is inserted into the first section 10a along the axial direction of the first section 10a, and when the ball 23 moves to the position of the groove 111, the compressed spring 24 drives the ball 23 to slide into the groove 111, completing the installation and fixation of the connecting arm 22.

[0061] In one embodiment, the position of the connecting arm 22 is adjustable, specifically, a plurality of locking portions provided on the first half shell 11 are distributed along the axial direction of the first section 10a; and / or, a plurality of locking portions provided on the second half shell 12 are distributed along the axial direction of the first section 10a. When it is necessary to adjust the position of the positioning ring 21, the connecting arm 22 is pushed or pulled along the axial direction of the first section 10a, the ball 23 is forced to slide out of the groove 111, the spring 24 is contracted, and until the ball 23 slides into the next groove 111 to form locking again. Of course, in other embodiments, the spring 24 can also be replaced by a spring leaf. The embodiment makes the positioning ring 21 moveable forward and backward to adjust the distance between the positioning ring 21 and the photosensitive assembly 40, so as to adapt to different cheek thicknesses of different patients.

[0062] In specific embodiments, referring back to Figure 4 and Figure 5 , the connecting arm 22 comprises a first half arm 221 and a second half arm 222 connected to each other, and the first half arm 221 and the second half arm 222 cooperatively form an inner cavity of the connecting arm 22; the second half arm 222 is provided with a positioning column 25 for fixing the spring 24, and the first half arm 221 is provided with a second through hole 221a opposite to the position of the positioning column 25; at least one of the first half arm 221 and the second half arm 222 is fixedly connected with the positioning ring 21.

[0063] In specific embodiments, the positioning column 25 is a cross rib positioning column, and the spring 24 is sleeved on the cross rib positioning column to form fixation. In the embodiment, the spring 24 is used to press the ball 23, so that the ball 23 and the sleeve joint section avoid generating a large friction force, thereby maintaining the stability of the positioning ring 21, avoiding a large deviation of the center of the photosensitive surface of the positioning ring 21 from the photosensitive surface of the photosensitive assembly 40, and being beneficial to the X-ray machine to obtain a dental film with higher definition.

[0064] In one embodiment, the wall surface gap d between the first section 10a and the sleeve joint section of the connecting arm 22 satisfies: 0mm < d ≤ 0.2mm. In the embodiment, the wall surface gap between the first section 10a and the connecting arm 22 is controlled within 0.2mm, which can ensure smooth movement of the connecting arm 22, and at the same time, the locking portion and the locking structure can maintain the stability of the positioning ring 21, avoid a large deviation of the center of the photosensitive surface of the positioning ring 21 from the photosensitive surface of the photosensitive assembly 40, and thereby make the X-ray machine obtain a dental film with higher definition.

[0065] In optional embodiments, the wall surface gap d between the first section 10a and the connecting arm 22 can be any one of 0.05mm, 0.1mm, 0.15mm, 0.2mm or a range between any two of them.

[0066] In one embodiment, as Figure 6As shown, the photosensitive assembly 40 comprises, from bottom to top, a packaged PCB board 41, a fixing layer 42, a conversion layer 43, a receiving layer 44, a waterproof layer 45 and a reflective layer 46 in sequence.

[0067] The PCB board 41 is used to convert electrical signals into image output, the fixing layer 42 can adopt double-sided adhesive tape, the conversion layer 43 can adopt a wafer, the receiving layer 44 can adopt cesium iodide, which can convert X-rays into visible light, the waterproof layer 45 can adopt Parrylin, which can seal and protect the receiving layer 44 and the conversion layer 43, and the reflective layer 46 can adopt white glue, which can reflect more visible light to the conversion layer 43, thereby improving the sensitivity of the intraoral sensor and reducing the required X-ray dose for obtaining the same clear dental film.

[0068] In the packaging process of the photosensitive assembly 40, the wafer is fixed on the PCB board 41 by double-sided adhesive tape to form the conversion layer 43, then the cesium iodide is covered on the surface of the wafer by evaporation process to form the receiving layer 44, then the Parrylin is covered on the surface of the receiving layer 44 by gas deposition method to form the waterproof layer 45, and then the silicone and titanium dioxide are solidified on the waterproof layer 45 by automatic dispensing machine and high-temperature baking to form the reflective layer 46.

[0069] The utility model embodiment further provides an X ray imaging system, such as Figure 7 As shown, the X ray imaging system comprises an intraoral sensor 100 and an X ray machine 200, the intraoral sensor 100 adopts the intraoral sensor of the above embodiment, and correspondingly, the X ray imaging system provided by the embodiment has the same technical effects as the above embodiment.

[0070] When taking a dental film, the intraoral sensor 100 is placed in the oral cavity, and the radiation barrel of the X ray machine 200 is aligned with the positioning ring 21 on the intraoral sensor 100 for positioning, or the positioning ring 21 is sleeved on the radiation barrel of the X ray machine 200 for positioning, and this physical positioning mode can be adapted to X ray machines 200 of different models and functions.

[0071] The above embodiment of the utility model is introduced in detail, and the principle and implementation mode of the utility model are described by applying specific examples, and the above embodiment is only used to help understand the method and core idea of the utility model; meanwhile, for those skilled in the art, according to the idea of the utility model, the specific implementation mode and application range will be changed, and according to the above, the content of the specification should not be understood as the limitation of the utility model.

[0072] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The preferred embodiments of the present application are shown in the drawings, but do not limit the patent scope of the present application. The present application can be realized in many different forms, and conversely, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing specific embodiments, or equivalently replace some of the technical features. Any equivalent structure made by using the content of the present application specification and drawings, directly or indirectly applied to other related technical fields, is also within the patent protection scope of the present application.

[0073] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, combinations, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. An in-mouth sensor, characterized in that, The shell, the positioning assembly, the circuit assembly and the photosensitive assembly are included. The shell includes a first section and a second section arranged at an angle to each other, and the first section and the second section are located outside and inside the oral cavity respectively when working. The positioning assembly is connected to the first section, and the positioning assembly and the second section are located at two ends of the first section respectively. The photosensitive assembly is installed on the second section, and the circuit assembly includes a circuit board with a wireless transmission module, and the photosensitive assembly is electrically connected to the circuit board.

2. The in-mouth sensor of claim 1, wherein, The positioning assembly includes a positioning ring and a connecting arm connected to each other. The connecting arm is sleeved with the first section, and the central axis of the positioning ring is perpendicular to the photosensitive surface of the photosensitive assembly.

3. The in-mouth sensor of claim 2, wherein, In the sleeving section of the first section and the connecting arm, the wall gap d between the first section and the connecting arm satisfies 0mm 4. The in-mouth sensor of claim 1, wherein, The positioning assembly includes a positioning ring and a connecting arm connected to each other, and the shell includes a first half shell and a second half shell. The first section is sleeved with the connecting arm, and at least one locking part is arranged on the inner wall of the first half shell and / or the second half shell. The connecting arm is provided with a locking structure, and the locking structure cooperates with at least one locking part to lock the first section and the connecting arm.

5. The in-mouth sensor of claim 4, wherein, The locking part is a groove. The connecting arm is a tubular structure, the locking structure is arranged in the inner cavity of the connecting arm, and the locking structure partially extends into the groove to lock the first section and the connecting arm.

6. The in-mouth sensor of claim 5, wherein, The locking structure includes a ball and a spring, one end of the spring is fixed to the inner wall of the connecting arm, the other end is connected to the ball, a second through hole is arranged on the connecting arm, the diameter of the second through hole is smaller than the diameter of the ball, the ball partially extends out of the second through hole and is embedded in the groove to lock the first section and the connecting arm.

7. The in-mouth sensor of claim 6, wherein, The connecting arm includes a first half arm and a second half arm connected to each other. The second half arm is provided with a positioning column for fixing the spring, and the second through hole is arranged opposite to the position of the positioning column on the first half arm. At least one of the first half arm and the second half arm is fixedly connected with the positioning ring.

8. The in-mouth sensor of claim 4, wherein, A plurality of locking parts arranged on the first half shell are distributed along the axial direction of the first section; and / or A plurality of locking parts arranged on the second half shell are distributed along the axial direction of the first section.

9. The in-mouth sensor of any one of claims 1 to 8, wherein, The shell includes a first half shell and a second half shell. The first section has a first mounting position for mounting the circuit assembly, and the second section has a second mounting position for mounting the photosensitive assembly. The first mounting position and the second mounting position are both cavities formed by the first half shell and the second half shell, and the two cavities have a connecting channel, and the connecting line connecting the circuit board and the photosensitive assembly is located in the connecting channel.

10. The in-mouth sensor of claim 9, wherein, The circuit board is fixed to the first half shell or the second half shell; and / or The circuit assembly further includes a power supply unit, the power supply unit is electrically connected to the circuit board, and the power supply unit is fixed to the first half shell or the second half shell.

11. The in-mouth sensor of claim 9, wherein, The circuit board comprises a charging interface, and the first half shell or the second half shell is provided with a first through hole for mounting the charging interface.

12. An X-ray imaging system, characterized in that An intraoral sensor according to any one of claims 1 to 11 in combination with an X-ray machine.

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