Craniomaxillofacial positioning device for orthodontic imaging

Abstract

The utility model discloses a cranio-maxillofacial positioning device for orthodontic imaging. The cranio-maxillofacial positioning device comprises a bottom plate; the two first vertical rods are arranged on the bottom plate in a spaced mode through a reciprocating motion mechanism, so that the two first vertical rods can move oppositely or away from each other; the lug fixing piece is connected with the first vertical rod through a rotating pair; the second vertical rod is arranged on the bottom plate; the face fixing assembly comprises a nose fixing piece and a forehead fixing piece which are connected with the second vertical rods through a telescopic mechanism, so that the nose fixing piece and the forehead fixing piece are located on the perpendicular bisector of the connecting line of the two first vertical rods and can move along the perpendicular bisector. According to the cranio-maxillofacial positioning device for orthodontic imaging, the head is fixed through the nose, the forehead and the ears of a patient, so that facial soft tissue deformation in the process of fixing the head of the patient is avoided, the CT imaging effect is guaranteed, and meanwhile the use requirements of people with different facial sizes can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially, and it is orthodontic imaging with craniofacial positioning device. BACKGROUND

[0002] When orthodontic treatment is carried out, often need first CT imaging to patient face to facilitate the subsequent treatment plan. When CT imaging is carried out to patient face, need to make patient and imaging equipment keep relative stable state to guarantee imaging effect, in prior art, usually through the chin of patient is placed on positioning support to fix patient head, such as the patent of disclosure No. CN 209951283 U discloses a kind of for jaw face cone beam CT projection's mandible improved positioning device, by the head of patient is placed on lifting platform upper end, and let patient resist mandible against positioning card strip, to position the head of patient. However, in the measurement process, patient often habitually utilizes support to carry face, which is easy to cause the deformation of facial soft tissue, affect CT imaging effect, further can affect the accuracy of detection result.

[0003] Therefore, it is necessary to design an orthodontic imaging craniofacial positioning device to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of craniofacial positioning devices for orthodontic imaging, by patient nose, forehead and ear to fix head, to avoid the deformation of facial soft tissue in the process of fixing the head of patient, guarantee CT imaging effect, while, can also meet the use demand of different population of facial size.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of craniofacial positioning device for orthodontic imaging, comprising:

[0007] Bottom plate;

[0008] First vertical rod, two first vertical rods are spaced apart on the bottom plate by reciprocating movement mechanism, so that two first vertical rods can be relatively or away from movement;

[0009] Ear fixing part, connected with the first vertical rod by rotating pair;

[0010] Second vertical rod, is arranged on the bottom plate;

[0011] Face fixing assembly, including nose fixing part and forehead fixing part connected with the second vertical rod by telescopic mechanism, so that nose fixing part and forehead fixing part are located on the perpendicular bisector of two first vertical rod connecting line, and can move along perpendicular bisector.

[0012] As a further improvement of the utility model, the rotating pair and the first vertical rod and the telescopic mechanism and the second vertical rod are connected through the sliding fixing structure.

[0013] As a further improvement of the utility model, the sliding fixing structure comprises a fixing block sleeved on the first vertical rod or the second vertical rod and capable of moving up and down relative to the first vertical rod or the second vertical rod, and a locking assembly for fixing the fixing block on the first vertical rod or the second vertical rod.

[0014] As a further improvement of the utility model, the locking assembly comprises a plurality of mounting through holes arranged on the first vertical rod or the second vertical rod in the vertical direction, a locking hole arranged on the fixing block and a bolt.

[0015] As a further improvement of the utility model, the telescopic mechanism comprises a fixed part and a moving part capable of moving horizontally relative to the fixed part.

[0016] As a further improvement of the utility model, the nose fixing part comprises a vertical rod arranged at one end of the moving part away from the fixed part, an inclined rod connected with the vertical rod and a nose fitting part with adjustable shape arranged at one end of the inclined rod away from the vertical rod and used for fitting on the nose of the patient.

[0017] As a further improvement of the utility model, the forehead fixing part comprises a horizontal rod arranged on the vertical rod through the sliding connection structure and a forehead fitting part with adjustable shape connected with the horizontal rod and used for fitting on the forehead of the patient.

[0018] As a further improvement of the utility model, a vertical scale is further arranged on the moving part.

[0019] As a further improvement of the utility model, the ear fixing part comprises an arc-shaped rod and an earplug arranged at one end of the arc-shaped rod away from the first vertical rod.

[0020] As a further improvement of the utility model, the reciprocating moving mechanism comprises a bidirectional screw rod provided with two thread sections with opposite rotation directions and a driving part for driving the bidirectional screw rod to rotate.

[0021] The utility model discloses the beneficial effects are:

[0022] 1. The utility model discloses according to ergonomics, through the ear fixed part of being located on two first vertical rods is fixed in the ear of patient, the nose fixed part of being located on the second vertical rod is fixed on the nose of patient and the forehead fixed part is fixed on the forehead of patient, can utilize nose, forehead and ear to carry out four point position limit, make the patient head keep relative fixed state, be convenient for CT imaging, avoid the emergence of the fixed time of using the chin of existing, because patient will habitually utilize the chin to carry out facial bearing and be easy to cause facial soft tissue deformation and then influence CT imaging effect condition.

[0023] 2. The utility model discloses through the reciprocating movement mechanism makes two first vertical pole can have the relative or away from the movement, can make the positioning device can be applicable to the crowd of different face width to make face fixed assembly can be located in the middle part position of face when adjusting the relative position of two first vertical pole, through telescopic mechanism makes face fixed assembly can move along the median line of two first vertical pole connection line, can make the positioning device satisfy the positioning demand of the patient of different face flatness, thereby make the positioning device can guarantee CT imaging effect through four point position definition simultaneously still can satisfy the use demand of the crowd of different face size. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the structure schematic drawing of orthodontic imaging with craniofacial positioning device of the utility model.

[0025] Figure 2 It is the structure schematic drawing of sliding fixed structure.

[0026] Figure 3 It is the structure schematic drawing of telescopic mechanism.

[0027] Figure 4 It is the cross section schematic drawing of telescopic mechanism.

[0028] Figure 5 It is the nose and forehead fixed orientation schematic drawing.

[0029] REFERENCE NUMERALS

[0030] 10, bottom plate, 11, first vertical pole, 12, second vertical pole, 21, fixed block, 22, installation through hole, 23, locking hole, 24, bolt, 30, telescopic mechanism, 31, fixed part, 311, sliding groove, 312, transverse limit hole, 32, moving part, 321, sliding block, 322, threaded rod, 33, nut, 34, flexible pad, 41, nose fixing piece, 411, vertical rod, 412, inclined rod, 413, nose fitting piece, 42, forehead fixing piece, 421, horizontal rod, 422, forehead fitting piece, 50, vertical scale, 60, ear fixing piece, 61, arc-shaped rod, 62, earplug, 71, groove, 72, bidirectional screw rod, 73, driving piece, 80, nasal bone, 90, forehead. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the utility model is described in detail below with the combination of drawings and specific embodiment.

[0032] It should be noted that, in order to avoid unnecessary details from obscuring the present application, only structures and / or processing steps closely related to the present application are shown in the drawings, and other details not closely related to the present application are omitted.

[0033] In addition, it should be noted that the term "comprise", "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or device.

[0034] Please refer to Figure 1 The orthodontic imaging craniofacial positioning device provided by the present application comprises:

[0035] a bottom plate 10;

[0036] a first vertical rod 11, two first vertical rods 11 are arranged on the bottom plate 10 through a reciprocating moving mechanism, so that the two first vertical rods 11 can move relatively or away from each other;

[0037] an ear fixing member 60 connected with the first vertical rod 11 through a rotating pair;

[0038] a second vertical rod 12 arranged on the bottom plate 10;

[0039] a face fixing assembly comprising a nose fixing member 41 and a forehead fixing member 42 connected with the second vertical rod 12 through an extension mechanism 30, so that the nose fixing member 41 and the forehead fixing member 42 are located on the median line of the line connecting the two first vertical rods 11 and can move forward and backward along the median line.

[0040] Specifically, the rotating pair and the first vertical rod 11 and the extension mechanism 30 and the second vertical rod 12 are connected through a sliding fixing structure, so that the ear fixing member 60 can move up and down along the first vertical rod 11 to adjust the fixing height of the ear fixing member 60, the extension mechanism 30 can move up and down along the second vertical rod 12 to adjust the fixing height of the extension mechanism 30 relative to the second vertical rod 12, and then adjust the height of the face fixing assembly. Figure 2As shown, taking the first vertical rod 11 as an example, the sliding fixing structure comprises a fixing block 21 sleeved on the first vertical rod 11 and movable up and down relative to the first vertical rod 11, and a locking assembly for fixing the fixing block 21 on the first vertical rod 11; for example, the locking assembly comprises a plurality of mounting through holes 22 arranged on the first vertical rod 11 in the vertical direction, a locking hole 23 arranged on the fixing block 21, and a bolt 24, after adjusting the height of the fixing block 21 relative to the first vertical rod 11 according to the use requirement, the bolt 24 is sequentially threaded through the locking hole 23 and the mounting through hole 22, so as to fix the fixing block 21 on the first vertical rod 11. The sliding fixing connection of the ear fixing member 60 with the first vertical rod 11 and the telescopic mechanism 30 with the second vertical rod 12 makes it possible to adjust the positions of the ear fixing member 60 and the face fixing assembly according to the height of the face of the patient during the imaging detection, so as to better limit and fix the head of the patient, and at the same time, for the patients with different face proportions, the height of the ear fixing member 60 and the nose fixing member 41 can be adjusted by the sliding fixing structure to adapt to the patients with different vertical distances between the nose and the ear.

[0041] Specifically, as Figure 1 , Figure 3 and Figure 4As shown, the telescopic mechanism 30 comprises a fixed part 31 and a moving part 32 horizontally movable relative to the fixed part 31, the fixed part 31 is arranged on the fixed block 21 sleeved on the second vertical rod 12 away from the moving part 32; for example, the fixed part 31 is a hollow frame, and the frame bottom is provided with a sliding groove 311; the moving part 32 is correspondingly provided with a sliding block 321 at the bottom, and the size of the moving part 32 is smaller than that of the fixed part 31, so that the moving part 32 can move relative to the fixed part 31; the side wall of the fixed part 31 is further provided with a transverse limiting hole 312, and the moving part 32 is provided with a threaded rod 322 passing through the transverse limiting hole 312 to the outside of the fixed part 31 at a position corresponding to the transverse limiting hole 312, the diameter of the threaded rod 322 is smaller than that of the transverse limiting hole 312, so that when the moving part 32 moves relative to the fixed part 31, the threaded rod 322 moves along the transverse limiting hole 312, and the threaded rod 322 is further provided with a nut 33, and the maximum diameter of the nut 33 is greater than that of the transverse limiting hole 312. When it is necessary to adjust the length of the telescopic mechanism 30, the moving part 32 is moved relative to the fixed part 31, and then the nut 33 is rotated towards the side wall of the fixed part 31 until the side wall of the nut 33 abuts against the fixed part 31, so that the moving part 32 and the fixed part 31 are kept relatively fixed. For example, a flexible pad 34 can also be arranged on the threaded rod 322, and the flexible pad 34 is located between the nut 33 and the side wall of the fixed part 31, so that when the relative position between the moving part 32 and the fixed part 31 is fixed by using the nut 33, the nut 33 is rotated to the state of abutting against the side wall of the fixed part 31 and being compressed, so as to improve the fixing effect by using the flexible pad 34, and at the same time, the damage of the side wall of the fixed part 31 caused by the nut 33 is avoided.

[0042] Specifically, the nose fixing part 41 comprises a vertical rod 411 arranged at the end of the moving part 32 away from the fixed part 31, an inclined rod 412 connected with the vertical rod 411, and a nose fitting part 413 with adjustable shape arranged at the end of the inclined rod 412 away from the vertical rod 411, Figure 1 For example, the inclined rod 412 is located below the vertical rod 411 and assumes an inclined downward posture away from the second vertical rod 12, and the nose fitting part 413 is arranged at the lower end of the inclined rod 412, and the nose fitting part 413 is made of a material with certain flexibility, so that the shape of the nose fitting part 413 can be adjusted to different arc shapes with different radii as needed, and then the nose fitting part 413 is clamped and arranged on the patient's nasal bone 80 to form a limit.

[0043] Specifically, the forehead fixing member 42 comprises a horizontal rod 421 arranged on the vertical rod 411 through a sliding connection structure and a forehead fitting member 422 connected to the end of the horizontal rod 421 away from the vertical rod 411 and capable of adjusting the shape to fit the forehead 90 of the patient. For example, the forehead fitting member 422 is made of a material with certain flexibility, so that the shape of the forehead fitting member 422 can be adjusted to different arcs according to the needs, and then the forehead fitting member 422 is fitted on the forehead 90 of the patient to form a limit, so that the craniofacial can be kept relatively stable in the vertical direction under the joint action of the nasal fixing member 41 and the forehead fixing member 42.

[0044] The sliding connection structure is similar to the sliding fixing structure, that is, the fixed block moves up and down on the vertical rod 411 and the position of the fixed block relative to the vertical rod 411 is fixed by the locking assembly, so that the horizontal rod 421 can move up and down on the vertical rod 411 to adjust the height of the horizontal rod 421 fixed on the vertical rod 411, and then the specific fixing points of the nose and forehead 90 can be adjusted according to the different sizes of the faces of different patients, and the fixing effect of the nasal fixing member 41 and the forehead fixing member 42 is ensured. The specific structure of the sliding connection structure will not be described here.

[0045] Specifically, the moving part 32 of the telescopic mechanism 30 is also provided with a vertical scale 50. By setting the vertical scale 50, the projection lateral film data of the patient can be quickly obtained by the doctor during CT imaging, the bone structure and tooth arrangement of the patient's head are clearly displayed, which is beneficial to subsequent diagnosis and treatment.

[0046] Specifically, the ear fixing member 60 comprises an arc-shaped rod 61 and an earplug 62 located at the end of the arc-shaped rod 61 away from the first vertical rod 11, and the arc-shaped rod 61 is fixed on the fixed block 21 sleeved on the first vertical rod 11 through a rotating pair, so that the arc-shaped rod 61 can be opened and closed in the horizontal direction, and then the ear fixing member 60 can be installed and fixed on the patient's ear to form a limit.

[0047] Specifically, the reciprocating moving mechanism comprises a bidirectional screw rod 72 provided with two thread segments with opposite rotation directions and a driving member 73 for driving the bidirectional screw rod 72 to rotate. For example, a groove 71 is arranged on the bottom plate 10, the two ends of the bidirectional screw rod 72 are connected to the side walls of the groove 71 through bearings, and the bottoms of the two first vertical rods 11 are provided with transverse through holes, and the inner walls of the transverse through holes are provided with threads corresponding to the bidirectional screw rod 72, so that the two first vertical rods 11 are respectively arranged on the two thread segments with opposite rotation directions of the bidirectional screw rod 72 and are in threaded connection with the bidirectional screw rod 72, and when the driving member 73 drives the bidirectional screw rod 72 to rotate, the two first vertical rods 11 move closer to or away from each other. For example, the driving member 73 is a motor.

[0048] Specifically, in use, first, according to the ear and the height of the nasal bone 80 of the patient, the ear fixing part 60 and the nose fixing part 41 are adjusted to the corresponding height, the length of the telescopic mechanism 30 is adjusted, the patient's nasal bone 80 is centrally attached and fixed on the nose attachment part 413 Figure 5 ), at the same time, the sliding connection structure is adjusted, the patient's forehead 90 (the frontal bone is centrally attached) is attached on the forehead attachment part 422; the driving part 73 is started, the interval of the two first vertical rods 11 is adjusted, the two first vertical rods 11 are displaced on both sides of the patient's face, the ear fixing part 60 is rotated, the ear fixing part 60 is fixed on the patient's ear, that is, the ear fixing part 60 is fixed on the position of the patient's external auditory canal, that is, the fixation of the patient's head is completed.

[0049] The above examples are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A cephalometric positioning device for orthodontic imaging, characterized in that, The application relates to a vertical fixation device for fixing a patient's head, which comprises the following parts: a bottom plate; first vertical rods, which are arranged on the bottom plate through a reciprocating moving mechanism, so that the two first vertical rods can move relatively or away from each other; ear fixing parts, which are connected with the first vertical rods through a rotating pair; second vertical rods, which are arranged on the bottom plate; a face fixing assembly, which comprises nose fixing parts and forehead fixing parts connected with the second vertical rods through a telescopic mechanism, so that the nose fixing parts and the forehead fixing parts are located on the median line of the connecting line of the two first vertical rods and can move along the median line; the rotating pair and the telescopic mechanism are connected with the first vertical rods and the second vertical rods through sliding fixing structures.

2. The craniofacial positioning device for orthodontic imaging of claim 1, wherein: The sliding fixing structure comprises a fixing block, which is sleeved on the first vertical rod or the second vertical rod and can move up and down relative to the first vertical rod or the second vertical rod, and a locking assembly for fixing the fixing block on the first vertical rod or the second vertical rod.

3. The craniofacial positioning device for orthodontic imaging of claim 2, wherein: The locking assembly comprises a plurality of mounting through holes arranged on the first vertical rod or the second vertical rod in the vertical direction, a locking hole arranged on the fixing block and a bolt.

4. The craniofacial positioning device for orthodontic imaging of claim 1, wherein: The telescopic mechanism comprises a fixed part and a moving part, which can move horizontally relative to the fixed part.

5. The orthopedic imaging craniofacial positioning device of claim 4, wherein: The nose fixing part comprises a vertical rod arranged on the end of the moving part far away from the fixed part, an inclined rod connected with the vertical rod and a nose fitting part with adjustable shape arranged on the end of the inclined rod far away from the vertical rod, which is used for fitting on the patient's nose.

6. The orthopedic imaging craniofacial positioning device of claim 5, wherein: The forehead fixing part comprises a horizontal rod arranged on the vertical rod through a sliding connection structure and a forehead fitting part with adjustable shape connected with the horizontal rod, which is used for fitting on the patient's forehead.

7. The orthopedic imaging craniofacial positioning device of claim 5, wherein: A vertical scale is further arranged on the moving part.

8. The craniofacial positioning device for orthodontic imaging of claim 1, wherein: The ear fixing part comprises an arc-shaped rod and an earplug arranged on the end of the arc-shaped rod far away from the first vertical rod.

9. The orthopedic imaging craniofacial positioning device of claim 1, wherein: The reciprocating moving mechanism comprises a bidirectional screw rod provided with two thread sections with opposite rotation directions and a driving part for driving the bidirectional screw rod to rotate.

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