Positioning device of intraoral radiographic image sensor

Abstract

The invention discloses a positioning device for an intraoral radiographic image sensor, and the device comprises a sensor which comprises a positioning part, a movable part, and a bearing part. The appearance of the positioning part conforms to the trend of teeth in an oral cavity, the positioning part is used for tooth occlusion so as to fix and maintain the relative position of the positioning part and the teeth, and the positioning part is provided with a track arranged along the trend of the teeth; the movable part is arranged on the track and can move along the track; the bearing part is connected with the movable part, faces the direction of the oral cavity in the tooth, is used for bearing and connecting the sensor and can rotate relative to the movable part to adjust the included angle between the sensor and the long axis of the tooth. The beneficial effects of the invention are that through the cooperation of the positioning part, the movable part and the bearing part, a patient is free from holding a sensor, a doctor can carry out projection only through simple operation, the shooting efficiency is improved, the sanitary infection caused by holding is avoided, and the fatigue caused by holding of the patient is eliminated.

Description

Technical Field

[0001] The invention belongs to the field of oral radiographic imaging, and in particular relates to a positioning device for an intraoral radiographic imaging sensor. Background Art

[0002] Oral X-rays are divided into extraoral whole-body radiographs and intraoral local radiographs. The equipment used in intraoral local radiographs mainly includes a main body, a light source, a sensor, etc. Clinically, the sensor needs to be placed in the mouth. Currently, the clinical method is to let the patient hold the sensor in his mouth, and the doctor holds the light source to shoot according to the angle line projection technology or the parallel projection technology. In this process, whether it is the angle line projection technology or the parallel projection technology, the sensor needs to be adjusted many times during shooting in order to make the shooting effect more accurate. However, in the current situation, the sensor is adjusted by the patient's hand. The patient does not understand the above-mentioned film-taking principle and it is difficult to adjust it to the required angle in a short time. The doctor needs to communicate and demonstrate to the patient repeatedly before the film-taking action can be completed. In addition, the hand-held operation requires the fingers to go deep into the oral cavity, and the fingers need to keep operating the sensor inside the oral cavity. The patient will feel uncomfortable. Holding the hand for a relatively long time at a fixed angle will cause stiffness and fatigue, and there will be problems with hygiene and infection. The above-mentioned multiple problems have formed the pain points of intraoral local radiographs and need to be solved urgently. Summary of the invention

[0003] To solve the above problems, the present invention discloses a positioning device for an intraoral radiographic image sensor, comprising a sensor, including a positioning portion, a movable portion and a carrier;

[0004] The shape of the positioning part conforms to the direction of the teeth in the oral cavity, and is used for tooth occlusion to fix and maintain the relative position of the positioning part and the teeth. The positioning part is provided with a track arranged along the direction of the teeth;

[0005] The movable part is arranged on the track and can move along the track;

[0006] The bearing member is connected to the movable part and faces the direction of the oral cavity inside the tooth, and is used to bear the connected sensor. The bearing member is rotatable relative to the movable part to adjust the angle between the sensor and the long axis of the tooth.

[0007] The positioning part is set to a shape that conforms to the direction of the teeth to ensure that the supporting part can reach any tooth only through the track. Compared with holding or setting the positioning part to be fixed only on certain teeth, the shape that conforms to the direction of the teeth is more labor-saving and convenient to move, and the movable part does not need to be disassembled when driving the supporting part to move. Compared with setting the positioning part to be fixed only on certain teeth, this solution is less prone to damage, reducing the chance of damage during use.

[0008] The sensor needs to be at a corresponding angle with the long axis of the tooth. The angle between the sensor and the long axis of the tooth is different depending on the projection technology used by the doctor. The parallel projection technology requires the sensor to be parallel to the long axis of the tooth, while the angled line projection technology requires an angle to be formed between the sensor and the long axis of the tooth, so that one end of the sensor is located at the vertex of the angle formed by the other end of the upper jaw intersecting with the end of the tooth; for specific projection technology, please refer to Chapter 2 of the book "Endodontic Radiography (Second Edition)" published by Liaoning Science and Technology Press: Principles and Techniques of Intraoral Radiography; the long axis of the tooth is the geometric axis that runs longitudinally through the tooth and passes through the center of the tooth. The term explanation comes from Baidu Encyclopedia.

[0009] Furthermore, the shape of the positioning portion conforms to the direction of the upper and lower rows of teeth, and is used to simultaneously fix and maintain the relative position of the positioning portion and the upper and lower rows of teeth; that is, the positioning portion can be a structure arranged to cover the upper and lower rows of teeth; the setting of covering two rows of teeth can provide support for the patient's mouth. Compared with covering only a single row of teeth, this structure can better reduce the patient's fatigue, and there is no need to disassemble when photographing the upper and lower teeth. Compared with the shape arranged to be a single row of teeth, this solution is simpler to operate.

[0010] At this time, it is preferred that the track is set at the middle position of the positioning part relative to the occlusion of the upper and lower teeth; the distance from the track in the middle position to the upper palate and the tongue surface is the same, and there is no need to rely on a complex structure when switching between upper and lower teeth for shooting. Switching can be achieved by rotating the movable part, which has a simple structure and reduces the difficulty of production.

[0011] Of course, the track can also be set at other positions along the direction of the teeth, such as at the inner wall of the upper / lower teeth where the positioning part is located. If the track is set toward the inside of the teeth, the positioning part needs to have a channel for fingers or other tools to pass through to adjust the movement of the movable part.

[0012] Of course, the shape of the positioning portion may be arranged in accordance with the direction of the upper or lower row of teeth, that is, the positioning portion only covers a single row of teeth; the advantage of the positioning portion only covering a single row of teeth is that the cost is relatively low, which is more conducive to cost saving, and there is no restriction on the setting of the track. The track can be set at a position of the positioning portion close to the inner wall of the tooth, close to the outer wall of the tooth, or at a position close to the occlusal surface of the tooth.

[0013] At this time, it is preferred that the track is located on the outer wall of the positioning part; the advantage of the track being located on the outer wall is that the movable part can be touched and moved without inserting fingers into the mouth, which reduces the risk of infection and is more hygienic than when the track is located in the direction of the oral cavity toward the teeth. However, at this time, the part where the movable part is connected to the track needs to be set to a right angle or a shape close to it to ensure connection with the carrier in the oral cavity.

[0014] Of course, the track can also be set at other positions along the direction of the teeth, such as the track is set at the positioning part facing the direction of the oral cavity inside the teeth, or the track is located on the occlusal surface of the teeth.

[0015] The positioning part, the movable part and the supporting part cooperate to solve the inconvenience of patients holding the sensor all the time, improve the patient's experience during the filming process, and at the same time have a preliminary positioning effect on the relative position of the sensor and the teeth.

[0016] Furthermore, an engagement groove is provided at the contact point between the positioning portion and the tooth, and the engagement groove is used to wrap the positioning tooth so that the tooth and the positioning portion are less likely to move relative to each other.

[0017] Furthermore, the track is configured as a jack / bump, the jack / bump is configured to correspond to the position of the tooth, the movable part is configured with a bump / jack plugged into the track, the track and the movable part are connected in a plug-in manner, and the doctor can directly unplug the movable part and then insert it into the tooth to be photographed when changing the tooth to be photographed. The position of the jack / bump corresponds to the position of the tooth, making it more convenient and accurate to confirm the tooth, improving the shooting effect, and saving shooting time.

[0018] Alternatively, the track passes through the positioning part and is provided with a slide groove structure, and the movable part and the slide groove structure are connected in cooperation. The slide groove cooperation method does not require the movable part to be pulled out. Compared with the plug-in method, the slide groove cooperation method is simpler to operate and faster to move.

[0019] At this time, preferably, the track is provided with positioning teeth corresponding to the positions of the teeth, and the movable part slides gradually along the positioning teeth, so that the moving distance of the movable part is more accurate, which also improves the shooting effect and saves shooting time.

[0020] Furthermore, the movable part includes a sleeve connected to the carrier and a movable block connected to the track, and the relative position of the movable block and the sleeve can be adjusted so that the carrier can extend to different positions in the oral cavity; when the parallel projection technology is adopted, in order to ensure the clarity of the captured image, the required distance between the sensor and the tooth is relatively close, but when the angle line projection technology is adopted, since an angle needs to be formed between the sensor and the tooth, the volume of the sensor is limited, and the carrier on which the sensor is fixed needs to maintain a certain distance from the tooth to ensure that there is enough space for one end of the sensor to contact the tooth and form an angle with the other end fitting the upper jaw; the two technologies require different distances between the sensor and the tooth. By setting the movable block and the sleeve to be adjustable in relative position, the carrier can be moved in the direction away from and close to the tooth, which can meet the use distance of both the angle line projection technology and the parallel projection technology. The structure of the present application will no longer limit the projection technology, and the doctor can choose a better projection technology according to actual conditions.

[0021] The pipe sleeve and the movable block are connected by threads or clamping to adjust the relative position of the movable part and the bearing member. Other connection modes that can realize relative movement between the pipe sleeve and the movable block can also be set.

[0022] Of course, not providing a sleeve only means that the relative positions of the movable part and the supporting part cannot be moved, so that the two projection technologies cannot be switched arbitrarily. However, this does not mean that the present invention cannot realize radiological imaging. The structure of the present invention can still realize imaging using one of the projection technologies. The supporting part and the movable part are directly hinged by a spherical hinge. Although the relative positions of the movable part and the supporting part cannot be moved, the doctor can use the angle line projection technology or the parallel projection technology to perform radiological imaging according to the distance between the movable part and the supporting part.

[0023] Preferably, the movable part is hinged to the center of the carrier. In this structure, the sensor fixed by the carrier can cover both the upper and lower teeth. Due to the limitation of the lower teeth, it cannot form an angle with the upper teeth, so the angle line projection technology cannot be used. However, when used in conjunction with the parallel projection technology, the carrier is adjusted to be parallel to the long axis of the tooth body to be photographed in the vertical direction, so that the upper and lower teeth can be photographed at the same time, thereby improving the shooting efficiency.

[0024] Alternatively, the center of the lower edge of the carrier is hinged to the movable part, and the extension line of the sensor fixed by the carrier forms an angle with the long axis of the tooth, and by adjusting the angle, the carrier can also be parallel to the long axis of the tooth. Therefore, this structure can be applied to both the angle line projection technology and the parallel projection technology when the distance between the carrier and the tooth is not limited;

[0025] The movable part is used to connect the track and the bearing member and drive the bearing member to move. The shape of the movable part can be any suitable shape.

[0026] Furthermore, the bearing member is provided with a bearing groove, which is arranged to pass through the bearing member, and one bearing groove can be provided. After the sensor is fixed to the bearing groove, the position of the sensor can be adjusted by adjusting the position of the bearing member, which is more convenient to use.

[0027] Alternatively, two bearing grooves are provided, which are distributed on both sides of the bearing member, so that the connected sensor extends in different directions of the oral cavity;

[0028] Two bearing slots can also be provided, and both bearing slots can be used to fix the sensor. The doctor can choose to fix the sensor in a suitable bearing slot according to the specific intraoral space around the teeth to be photographed and the distance between the teeth and the sensor, so that the use is more flexible.

[0029] Of course, it is not limited to the groove structure, and a plurality of fixing claws may be provided at two longitudinal edges of the surface of the carrier close to / away from the teeth; other structures that can play a fixing role may also be used.

[0030] Furthermore, it also includes a traction drive mechanism and a control mechanism;

[0031] The traction drive mechanism is used to connect the bearing member and the control mechanism to drive the bearing member to rotate;

[0032] The control mechanism is located outside the positioning part and can control the traction drive mechanism.

[0033] The traction drive mechanism and the control mechanism are provided to optimize the adjustment of the sliding part and the carrier with fingers. With the help of the traction drive mechanism and the control mechanism, the angle and position of the carrier can be adjusted without putting fingers into the mouth. The whole shooting process is more hygienic and the occurrence of infection is prevented.

[0034] Furthermore, the traction drive mechanism includes at least two guide wires and guide rollers, one end of the guide wire is symmetrically connected to the side position of the support member, and the other end thereof is connected to the guide roller after passing through the movable part and the positioning part. The guide roller rotates forward and reversely to pull the guide wire to rotate the support member; the guide wire structure is used to pull the support member. Since the guide wire is soft, occupies a small space, and has strong plasticity, compared with the connecting rod, the guide wire and other flexible structures are more suitable for use in such narrow spaces, and the guide wire structure is stable and not easy to rust or damage. Using the guide wire to control the support member can be safer and more hygienic.

[0035] The control mechanism is configured as a knob, and the knob is connected to the guide roller to rotate the guide roller. It may also be other structures having the same function.

[0036] Preferably, four guide wires are provided, symmetrically arranged at the four sides of the support member, and the guide wires are symmetrically connected to a guide roller in pairs. Two guide rollers are provided, and the four sides are symmetrically arranged in pairs to simultaneously realize the vertical axial rotation and the horizontal axial rotation of the support member.

[0037] Preferably, the traction drive mechanism is arranged in the inner cavity of the sleeve, and the sleeve structure and the traction drive mechanism can coexist. The traction drive mechanism is arranged in the inner cavity of the sleeve, and when the sleeve moves, the traction drive mechanism and the operating mechanism are driven to move as a whole, which will not affect the functions of the traction drive mechanism and the operating mechanism.

[0038] The doctor can operate the sensor in the mouth to rotate without putting his hand into the mouth, which is more hygienic and prevents infection.

[0039] The movable part is provided with a guide wire channel for the guide wire to pass through. A plurality of guide wire channels are provided to correspondingly gather each guide wire and provide guidance for the guide wire to prevent the guide wire from being entangled and knotted.

[0040] The beneficial effects of the present invention are:

[0041] 1. Through the coordination of the positioning part, the movable part and the bearing part, the patient is freed from holding the sensor. The doctor can perform the projection with simple operations, which improves the efficiency of filming and eliminates the fatigue of the patient holding the sensor.

[0042] 2. It is equipped with a traction drive mechanism and a control mechanism. The doctor does not need to put his hands deep into the mouth. He can adjust the sensor by adjusting the control mechanism outside the mouth, avoiding bacterial infection outside and inside the mouth and solving the hygiene problem.

[0043] 3. The positioning device of this solution has a simple structure and controllable cost. As a disposable item, it ensures hygiene and health during the projection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present application and do not constitute improper limitations on the present invention.

[0045] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0046] Figure 2 It is a right view of an embodiment of the present invention;

[0047] Figure 3 It is a structural schematic diagram of another embodiment of the present invention;

[0048] Figure 4 A schematic diagram of the casing structure according to an embodiment of the present invention;

[0049] Figure 5 A bottom view of an embodiment of the present invention;

[0050] Figure 6 The bearing member of the embodiment of the present invention is based on Figure 5 A magnified view of the structure;

[0051] Figure 7 The embodiment of the present invention is based on Figure 6 A side cross-sectional view of

[0052] Figure 8 A side cross-sectional view of a carrier according to another embodiment of the present invention;

[0053] Fig. 9 A schematic diagram of the structure of a traction drive mechanism and a control mechanism according to an embodiment of the present invention;

[0054] Fig.10 It is a right side view of an embodiment of the present invention with a traction drive mechanism and a control mechanism;

[0055] Fig.11 This is an enlarged view of the internal structure of the traction drive mechanism and the control mechanism of the embodiment of the present invention;

[0056] In the accompanying drawings: 1-positioning part, 2-movable part, 3-carrying part, 4-traction drive mechanism, 5-control mechanism, 11-track, 111-slide groove, 112-jack, 21-handle, 22-tube sleeve, 23-movable block, 24-spherical hinge, 31-carrying groove, 41-guide wire, 42-guide roller, 43-guide wire channel, 51-knob. DETAILED DESCRIPTION

[0057] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0058] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0059] In addition, in the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0060] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0062] like Figure 1 , Figure 2 As shown, a positioning device for an intraoral radiographic image sensor comprises a sensor, including a positioning portion 1, a movable portion 2 and a carrier 3;

[0063] The shape of the positioning part 1 conforms to the direction of the teeth in the oral cavity, and is used for tooth occlusion to fix and maintain the relative position of the positioning part 1 and the teeth. The positioning part 1 is provided with a track 11 arranged along the direction of the teeth;

[0064] The movable part 2 is arranged on the track 11 and can move along the track 11;

[0065] The bearing member 3 is connected to the movable part 2 and faces the direction of the oral cavity inside the tooth, and is used to bear and connect the sensor. The bearing member 3 is rotatable relative to the movable part 2 to adjust the angle between the sensor and the long axis of the tooth.

[0066] The sensor needs to be at a corresponding angle with the long axis of the tooth. The angle between the sensor and the long axis of the tooth is different depending on the projection technology used by the doctor. The parallel projection technology requires the sensor to be parallel to the long axis of the tooth, while the angled line projection technology requires an angle to be formed between the sensor and the long axis of the tooth so that one end of the sensor is located at the vertex of the angle formed by the other end of the upper jaw intersecting with the end of the tooth.

[0067] The sensor is fixed to the carrier 3, and the positioning part 1 is fixed on the tooth. The doctor adjusts the angle between the carrier 3 and the long axis of the tooth according to the projection technology used, and places the light source at the corresponding position for shooting. Compared with the existing technology, the patient does not need to hold the sensor, and the positioning part 1 has a certain fixing effect on the carrier 3, which makes it more convenient to adjust the sensor.

[0068] Based on the different positioning parts 1, the following implementations are possible:

[0069] In one solution, the shape of the positioning part 1 conforms to the direction of the upper and lower rows of teeth, and is used to simultaneously fix and maintain the relative position of the positioning part 1 and the upper and lower rows of teeth; that is, the positioning part 1 can be set as a structure covering the upper and lower rows of teeth; this structure can support the patient's mouth opening and relieve the fatigue caused by the patient's long-term mouth opening; at this time, preferably, the track 11 is set at the middle position of the positioning part 1 relative to the upper and lower teeth occlusion (such as Figure 1 , Figure 2 shown);

[0070] Of course, further, the track 11 can also be set at other positions along the direction of the teeth, such as: set at the inner wall of the positioning part 1 located on the upper / lower teeth.

[0071] In another embodiment, the shape of the positioning portion 1 is arranged to conform to the direction of the lower row of teeth, that is, the positioning portion 1 only covers a single row of teeth (such as Figure 3 As shown), the track 11 is arranged at the middle position of the positioning part 1 relative to the occlusion of the upper and lower teeth;

[0072] At this time, preferably, the shape of the positioning part 1 can also be arranged in accordance with the direction of the upper teeth. Further, the track 11 can be arranged in the direction of the positioning part 1 toward the teeth in the oral cavity.

[0073] In a more preferred solution, an occlusal groove (not shown in the figure) is provided at the contact point between the positioning portion 1 and the tooth, and the occlusal groove is used to wrap the positioning tooth to make it more difficult for the tooth and the positioning portion 1 to move relative to each other.

[0074] Based on the different connection modes between the track 11 and the movable part 2, there are the following embodiments:

[0075] like Figure 1 , Figure 2 In one of the solutions shown in the figure, the track 11 passes through the positioning part 1 and is provided with a slide groove 111 structure, and the movable part 2 and the slide groove 111 structure are connected in a coordinated manner (such as Figure 1 , Figure 2 At this time, preferably, the track 11 is provided with positioning teeth (not shown in the figure) corresponding to the positions of the teeth.

[0076] like Figure 2 In another embodiment, the track 11 is configured as a socket 112 / protrusion, the socket 112 / protrusion is configured corresponding to the position of the teeth, the movable part 2 is configured with a protrusion (not shown) / hole 112 plugged into the track 11, and the plugging position of the movable part 2 corresponds to the position of the teeth, which is more conducive to accurately determining the relative position of the carrier 3 and the teeth (such as Figure 3 shown).

[0077] Based on the different structures of the movable part 2, the following embodiments are possible:

[0078] One of the options, such as Figure 4As shown, the movable part 2 includes a sleeve 22 connected to the carrier 3 and a movable block 23 connected to the track 11. The relative position of the movable block 23 and the sleeve 22 can be adjusted so that the carrier 3 extends to different positions in the oral cavity; preferably, the traction drive mechanism 4 can also be arranged in the inner cavity of the sleeve 22 (such as Figure 4 shown).

[0079] Preferably, the movable part may also be provided with a handle 21 to facilitate the doctor to move the movable part 2 .

[0080] The doctor can adjust the distance between the carrier 3 and the teeth according to different projection techniques, which is convenient for the doctor to choose the appropriate projection technique according to different tooth conditions.

[0081] Preferably, the pipe sleeve 22 and the movable block 23 may be connected by threads, or by snap-fitting, or by other relatively movable connection modes, so as to adjust the relative position of the movable part 2 and the bearing member 3 .

[0082] The bearing member 3 is hinged to the movable part 2 through a spherical hinge 24; preferably, the center of the lower edge of the bearing member 3 is hinged to the movable part 2 (such as Figure 2 , 3 , 4); it may also be that the movable portion 2 is hinged to the center position of the bearing member 3;

[0083] The movable portion 2 is used to connect the positioning portion 1 and the supporting member 3 and drive the supporting member 3 to move. The shape of the movable portion 2 can be any applicable shape.

[0084] Based on different structures of the carrier 3, the following embodiments are possible:

[0085] In one solution, the bearing member 3 is provided with a bearing groove 31, and the bearing groove 31 is arranged to penetrate the bearing member 3 (such as Figure 5 , Figure 6 , Figure 7 shown);

[0086] In another solution, two bearing grooves 31 are provided, which are distributed on both sides of the bearing member 3, so that the connected sensor extends in different directions of the oral cavity. The doctor can choose to fix the sensor in a suitable bearing groove 31 (such as Figure 8 shown).

[0087] Another alternative is to provide a plurality of fixing claws at two longitudinal edges of the surface of the carrier 3 close to / away from the teeth;

[0088] Based on the traction drive mechanism 4 and the control mechanism 5, the embodiments are as follows:

[0089] like Fig. 9 ,10 , a solution shown in 11, further comprising a traction drive mechanism 4 and a control mechanism 5;

[0090] The traction drive mechanism 4 is used to connect the carrier 3 and the control mechanism 5 to traction-drive the carrier 3 to rotate;

[0091] The control mechanism 5 is located outside the positioning portion 1 and can control the traction drive mechanism 4 .

[0092] In a preferred embodiment, the traction drive mechanism 4 includes four guide wires 41 and two guide rollers 42. The four guide wires 41 are symmetrically arranged at the four sides of the carrier 3, and the other ends thereof pass through the movable portion 2 and the positioning portion 1 and are connected to the guide rollers 42. The two symmetrical guide wires 41 are connected to one guide roller 42. The two guide wires 41 on the same guide roller 42 are wound in opposite directions, and the guide roller 42 rotates forward and reversely to pull the guide wires 41 to rotate the carrier 3 (such as Fig. 9 , 10 shown);

[0093] The control mechanism 5 is configured as a knob 51 , and the knob 51 is connected to the guide roller 42 to rotate the guide roller 42 .

[0094] The movable part 2 is provided with a guide wire channel 43 for the guide wire 41 to pass through. There are a plurality of guide wire channels 43 to correspondingly converge each guide wire 41 and provide guidance for the guide wire 41 (such as Fig.11 shown).

[0095] Anything not described in the present invention can be achieved by adopting or drawing on existing technologies.

[0096] The doctor rotates the guide roller and controls the rotation of the sensor in the mouth under the movement of the two guide wires. This is more hygienic and prevents infection than other solutions.

[0097] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referenced to each other. The common structures of each embodiment can also be combined with each other. Each embodiment focuses on the differences from other embodiments.

[0098] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A positioning device for an intraoral radiographic image sensor, comprising a sensor, characterized in that: It includes a positioning part, a movable part and a bearing part; The shape of the positioning part conforms to the direction of the teeth in the oral cavity, and is used for tooth occlusion to fix and maintain the relative position of the positioning part and the teeth. The positioning part is provided with a track arranged along the direction of the teeth; The movable part is arranged on the track and can move along the track; The bearing member is connected to the movable part and faces the direction of the tooth and the oral cavity, and is used to bear and connect the sensor. The bearing member is rotatable relative to the movable part to adjust the angle between the sensor and the long axis of the tooth.

2. The positioning device for an intraoral radiographic image sensor according to claim 1, characterized in that: The shape of the positioning part conforms to the direction of the upper and lower rows of teeth and is used to fix and maintain the relative position of the positioning part and the upper and lower rows of teeth; the track is arranged at the middle position of the positioning part relative to the occlusion of the upper and lower teeth.

3. The positioning device for an intraoral radiographic image sensor according to claim 1, characterized in that: An engagement groove is provided at the contact point between the positioning portion and the tooth, and the engagement groove is used to wrap and position the tooth.

4. The positioning device for an intraoral radiographic image sensor according to claim 1, characterized in that: The track is configured as a socket / bump, the socket / bump is arranged corresponding to the position of the tooth, and the movable part is provided with a bump / hole plugged into the track.

5. The positioning device for an intraoral radiographic image sensor according to claim 1, characterized in that: The track passes through the positioning portion and is provided with a slide groove structure, and the movable portion is cooperatively connected with the slide groove structure.

6. The positioning device for an intraoral radiographic image sensor according to claim 1, characterized in that: The bearing member is provided with a bearing groove, and the bearing groove is arranged to penetrate the bearing member; Or the bearing grooves are provided with two, which are distributed on both sides of the bearing member, so that the connected sensor can extend in different directions of the oral cavity.

7. The positioning device for an intraoral radiographic image sensor according to claim 1, characterized in that: It also includes a traction drive mechanism and a control mechanism; The traction drive mechanism is used to connect the bearing member and the control mechanism to traction drive the bearing member to rotate; The control mechanism is located outside the positioning portion and can control the traction drive mechanism.

8. The positioning device for an intraoral radiographic image sensor according to claim 7, characterized in that: The traction drive mechanism includes at least two guide wires and a guide roller, one end of the guide wire is symmetrically connected to the side of the carrier, and the other end thereof passes through the movable part and the positioning part and is connected to the guide roller. The guide roller rotates forward and reversely to pull the guide wire to rotate the carrier; The control mechanism is configured as a knob, and the knob is connected to the guide roller to rotate the guide roller.

9. The positioning device for an intraoral radiographic image sensor according to claim 8, characterized in that: Four guide wires are provided and symmetrically arranged at four sides of the bearing member. Two symmetrical guide wires are connected to a guide roller, and two guide rollers are provided.

10. The positioning device for an intraoral radiographic image sensor according to claim 8 or 9, characterized in that: The movable part is provided with a guide wire channel for the guide wire to pass through, and a plurality of guide wire channels are provided to correspond to and converge each guide wire.

Images