阅读说明：本技术 一种自动加力扩大上颌牙弓的装置 (Device for automatically applying force to enlarge maxillary dental arch ) 是由 陈曦 吴昊 张奕 李靖祥 赵云山 王文芳 王雅倩 辛乾英 于 2020-12-30 设计创作，主要内容包括：本发明公开一种自动加力扩大上颌牙弓的装置,包括支架、加力杆、驱动机构、导向机构；加力杆与导向机构滑动连接,导向机构和驱动机构使加力杆向支架的外侧或内侧平移,导向机构固定设置在支架上,驱动机构的输出端连接加力杆的力输入端,加力杆设置在支架的两侧,导向机构和驱动机构使加力杆向支架的外侧或内侧平移；导向机构包括导向轨和导向滑块,滑块可滑动得设置在导向轨上,滑块还同时连接加力杆和驱动机构的输出端；能够实现扩弓器的自动加力,避免因患者依从性差而影响治疗进度和效果；能够根据患者的情况进行加力参数的调整,能够通过单次小距离、高频次加力,提高患者治疗过程的舒适性；实现从传统上颌扩弓到高实现率增大的改进以保证临床扩弓效果。(The invention discloses a device for expanding maxillary dental arch by automatically applying force, which comprises a bracket, a force applying rod, a driving mechanism and a guide mechanism, wherein the force applying rod is arranged on the bracket; the stress application rod is connected with the guide mechanism in a sliding mode, the guide mechanism and the driving mechanism enable the stress application rod to translate towards the outer side or the inner side of the support, the guide mechanism is fixedly arranged on the support, the output end of the driving mechanism is connected with the force input end of the stress application rod, the stress application rod is arranged on two sides of the support, and the guide mechanism and the driving mechanism enable the stress application rod to translate towards the outer side or the inner side of the support; the guide mechanism comprises a guide rail and a guide sliding block, the sliding block can be arranged on the guide rail in a sliding manner, and the sliding block is also connected with the stressing rod and the output end of the driving mechanism; the automatic stress application of the arch expander can be realized, and the influence on the treatment progress and effect caused by poor compliance of a patient is avoided; the stress application parameters can be adjusted according to the condition of a patient, and the comfort of the patient in the treatment process can be improved by applying stress at a single small distance and a high frequency; the improvement from the traditional maxillary arch expansion to the high-realization-rate increase is realized to ensure the clinical arch expansion effect.)

1. A device for automatically applying force to expand maxillary dental arch is characterized by comprising a bracket (1), a force applying rod (2), a driving mechanism and a guide mechanism; the stress application rod (2) is connected with a guide mechanism in a sliding mode, the guide mechanism and a driving mechanism enable the stress application rod (2) to translate towards the outer side or the inner side of the support (1), the guide mechanism is fixedly arranged on the support (1), the output end of the driving mechanism is connected with the force input end of the stress application rod (2), the stress application rod (2) is arranged on two sides of the support (1), and the guide mechanism and the driving mechanism enable the stress application rod (2) to translate towards the outer side or the inner side of the support (1); the guide mechanism comprises a guide rail and a guide sliding block, the guide sliding block (4) can be arranged on the guide rail (5) in a sliding mode, and the guide sliding block (4) is also connected with the stressing rod (2) and the output end of the driving mechanism at the same time.

2. The device for automatically reinforcing and expanding the maxillary arch according to claim 1, wherein the driving mechanism comprises a screw rod (3), a threaded hole is formed in the guide slider (4), the guide slider (4) is in threaded fit with the screw rod (3), the screw rod (3) rotates to drive the guide slider to translate along a guide rail and a screw rod axis, and the driving end of the screw rod (3) is connected with the output end of the motor (10); the motor (10) is arranged on the support (1), the control end of the motor (10) is connected with the output end of the controller, the power supply device and the controller of the motor (10) are connected with the motor (10) through cables, the number of the lead screws (3) is four, the two lead screws are respectively arranged on two sides of the support (1), and the active end of each lead screw is connected with the output end of the motor (10).

3. Device for the automatic stressing of the maxillary arch according to claim 2 wherein the pitch of the screw (3) does not exceed 0.2 mm.

4. The device for automatically reinforcing and expanding the maxillary dental arch according to claim 2, wherein the screw mandrel (3) is provided with a planting nail driving rod (11), and both ends of the planting nail driving rod (11) are provided with threaded holes (12) for mounting planting nails.

5. The device for automatically applying force to enlarge the maxillary arch according to claim 1, further comprising a shell, a button cell and a miniature circuit board, wherein the miniature circuit board is arranged on the bottom surface of the bracket (1), a microcontroller is arranged in the miniature circuit board, the microcontroller is connected with a control input end of a motor, and the microcontroller controls the frequency and the displacement of the applied force; the button cell is a power supply and is positioned in the center of the bracket (1), and the button cell provides electric energy for the circuit board and the motor (10); the shell is used for accommodating the support (1), the button cell, the motor (10), the miniature circuit board and the stress application rod (2), the stress application rod extends out of two sides of the shell, an opening is reserved in the shell, and the shell and the opening are sealed.

6. The device for automatically adding force to expand the maxillary arch according to claim 1, wherein four guide rails (5) are arranged in parallel, four screw rods (3) are arranged, screw rod sliding blocks (4) are arranged on the screw rods (3), transmission gears (8) are arranged at the driving ends of the screw rods (3), the transmission gears (8) are meshed with driving gears (7), the driving gears (7) are respectively connected with the output ends of motors, the screw rods (3) comprise first screw rods (31), second screw rods (32), third screw rods (33) and fourth screw rods (34), the first screw rods (31) and the second screw rods (32) are positioned on the same side of the bracket (1), and the third screw rods (33) and the fourth screw rods (34) are positioned on the same side of the bracket (1); the screw thread directions of the first screw rod (31) and the second screw rod (32) are opposite, and the screw thread directions of the third screw rod (33) and the fourth screw rod (34) are opposite.

7. The device for automatically reinforcing and enlarging the maxillary dental arch according to claim 6, wherein the transmission gears (8) of the first lead screw (31) and the second lead screw (32) are engaged with the same driving gear (7), the transmission gears (8) of the third lead screw (33) and the fourth lead screw (34) are engaged with one driving gear (7), and the driving gear (7) and the transmission gear (8) are both spur gears.

8. Device for the automatic stressing expansion of the maxillary arch according to claim 6 wherein the transmission gears (8) of the first screw (31) and the third screw (33) mesh with the same driving gear (7), the transmission gears (8) of the second screw (32) and the fourth screw (34) mesh with the same driving gear (7), and both the driving gear (7) and the transmission gears (8) are bevel gears.

9. The device for automatically reinforcing and expanding the maxillary arch according to claim 8, wherein a driving motor is provided, an output shaft of the driving motor is connected with a driving rod, a driving gear is arranged on the driving rod, the driving gear is a bevel gear, the driving rod is detachably connected with the bracket, when the screw rod needs to be adjusted, the driving rod is connected with the bracket (1), the driving gear is meshed with the driving gear, the motor is started, the driving rod drives the screw rod to rotate, and then the reinforcing rod is enabled to translate towards the outer side or the inner side of the bracket (1).

10. Device for the automatic stressing expansion of the maxillary arch of claim 9 wherein the length of the driving rod (6) is not less than 5 cm; the bracket (1), the stressing rod (2), the screw rod (3) and the screw rod sliding block (4) are all made of stainless steel or titanium alloy; the edges and corners of the bracket (1), the screw rod sliding block (4) and the screw rod (3) are in smooth transition.

Technical Field

The invention belongs to the field of orthodontic appliances, and particularly relates to a device for automatically applying force to enlarge a maxillary dental arch.

Background

The traditional treatment method is that a palatal slit is opened by loading large mechanical force, so that new bones are continuously deposited at the palatal slit, the width of the maxillary dental arch is enlarged, and the malocclusion is improved.

However, the traditional bow expander has the following problems in the action process: 1. the loaded force is large, the maxillary bone is easy to be damaged, and for example, the gravity matching high-frequency stress application may cause facial deformity of the children in the growth and development period; 2. the method needs the self-stressing of the patient, has higher requirement on the dependence of the patient, and is difficult to realize good matching in adolescence because the patients who carry out the bow-expanding treatment are mostly adolescents in the growth and development period, thus easily causing the prolonging of the treatment time and even the failure of the treatment; 3. the patient's comfort during treatment is poor, and discomfort is maximized especially after each application of force; 4. the manual force application key is easy to enter the air passage by mistake to cause serious injury. 5. For adult non-operative expansion of arches, the implant nail is implanted through the maxilla so as to directly apply force to the jaw bone to realize the expansion of the maxilla of the adult, and the expansion of the maxilla is also invasive and gravity expansion; 6. in the existing CN201310000089.7 adjustable magnetic force integrated arch expander, a magnet is used as a force application source to expand the arch of the upper jaw, and the applied arch expansion force is gradually attenuated along with time until the arch expansion force returns to zero and is reloaded next time; the problem of needing patient's cooperation afterburning has been avoided to this scheme, but initial afterburning power value is great, causes the patient to be uncomfortable easily, and power value decay probably also can exert an influence to the treatment effect in the treatment process.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a device for automatically applying force to expand a maxillary dental arch, which aims to solve the dependence of a manual force application method on patients in clinic, reduce discomfort in a treatment process by reducing a loading force value and improving force application frequency and improve treatment effect and comfort.

In order to achieve the purpose, the invention adopts the technical scheme that: a device for automatically applying force to enlarge a maxillary dental arch comprises a bracket, a force applying rod, a driving mechanism and a guide mechanism; the stress application rod is connected with the guide mechanism in a sliding mode, the guide mechanism and the driving mechanism enable the stress application rod to translate towards the outer side or the inner side of the support, the guide mechanism is fixedly arranged on the support, the output end of the driving mechanism is connected with the force input end of the stress application rod, the stress application rod is arranged on two sides of the support, and the guide mechanism and the driving mechanism enable the stress application rod to translate towards the outer side or the inner side of the support; the guide mechanism comprises a guide rail and a guide sliding block, the guide sliding block can be arranged on the guide rail in a sliding mode, and the guide sliding block is also connected with the force applying rod and the output end of the driving mechanism.

The driving mechanism comprises a screw rod, a threaded hole is formed in the guide sliding block, the guide sliding block is in threaded fit with the screw rod, the guide sliding block is driven by the rotation of the screw rod to translate along the guide rail and the axis of the screw rod, and the driving end of the screw rod is connected with the output end of the motor; the motor sets up on the support, and the control end of motor connects the output of controller, and the power supply unit and the controller of motor pass through the cable with the motor and are connected, and the lead screw is provided with four, and two lead screws set up respectively in the both sides of support, and the initiative end of every lead screw all is connected with the output of motor.

The screw pitch of the screw rod is not more than 0.2 mm.

The screw rod is provided with a planting nail driving rod, and both ends of the planting nail driving rod are provided with threaded holes for mounting planting nails.

The micro circuit board is arranged on the bottom surface of the support, a microcontroller is arranged in the micro circuit board, the microcontroller is connected with the control input end of the motor, and the microcontroller controls the frequency and the displacement of force application; the button battery is a power supply and is positioned in the center of the bracket, and the button battery provides electric energy for the circuit board and the motor; the casing holds support, button cell, motor, miniature circuit board and stress application pole, and the stress application pole stretches out the casing both sides, leaves on the casing and establishes the opening, and the casing all seals with the opening part.

The guide rails are arranged in parallel, four screw rods are arranged, screw rod sliding blocks are arranged on the screw rods, transmission gears are arranged at the driving ends of the screw rods, the transmission gears are meshed with driving gears, the driving gears are respectively connected with the output end of a motor, the screw rods comprise a first screw rod, a second screw rod, a third screw rod and a fourth screw rod, the first screw rod and the second screw rod are located on the same side of the support, and the third screw rod and the fourth screw rod are located on the same side of the support; the screw thread directions of the first screw rod and the second screw rod are opposite, and the screw thread directions of the third screw rod and the fourth screw rod are opposite.

The transmission gears of the first screw rod and the second screw rod are meshed with the same driving gear, the transmission gears of the third screw rod and the fourth screw rod are meshed with the same driving gear, and the driving gear and the transmission gears are straight gears.

The transmission gears of the first screw rod and the third screw rod are meshed with the same driving gear, the transmission gears of the second screw rod and the fourth screw rod are meshed with the same driving gear, and the driving gear and the transmission gears are bevel gears.

The driving rod is a bevel gear, the driving rod is detachably connected with the support, when the screw rod needs to be adjusted, the driving rod is connected with the support in a detachable mode, the driving gear is meshed with the transmission gear, the motor is started, the driving rod drives the screw rod to rotate, and therefore the force applying rod can translate to the outer side or the inner side of the support.

The length of the driving rod is not less than 5 cm; the bracket, the stressing rod, the screw rod and the screw rod sliding block are all made of stainless steel or titanium alloy; the edges and corners of the bracket, the screw rod sliding block and the screw rod are in smooth transition.

Compared with the prior art, the invention has at least the following beneficial effects:

the automatic force application device can realize the automatic force application of the arch expander, and avoid the influence on the treatment progress and effect caused by poor compliance of patients; the stress application parameters can be adjusted according to the condition of a patient, the stress application can be performed by a single small distance and high frequency, and the patient does not need to open the mouth all the time in the adjusting stage, so that the comfort of the patient in the treatment process is greatly improved; and moreover, the labor intensity of medical staff is reduced, the adjustment accuracy is improved, and the improvement from traditional maxillary arch expansion to high-realization-rate increase is realized to ensure the clinical arch expansion effect.

Drawings

Fig. 1 is a schematic structural diagram based on embodiment 1 of the present invention.

Fig. 2 is a schematic view of the structure of the present invention in which a plurality of motors are provided.

Fig. 3 is a schematic structural diagram of the present invention with two motors and a matching driving mechanism.

Fig. 4 is a schematic diagram of a structure in which the present invention can be implemented.

Fig. 5 is a schematic diagram of another implementation structure based on the embodiment shown in fig. 4.

Fig. 6 is a schematic structural view of the driving motor arranged on the bracket on the basis of the embodiment shown in fig. 4 and 5.

Fig. 7 is a schematic structural view of the driving rod of the planting nail arranged at the same time.

FIG. 8 is a schematic view of the structure of the implantation nail driving rod arranged outside the bracket

In the figure, 1-bracket, 2-force application rod, 21-first force application rod, 22-second force application rod, 3-screw rod, 31-first screw rod, 32-second screw rod, 33-third screw rod, 34-fourth screw rod, 4-screw rod slide block, 5-guide rail, 6-driving rod, 7-driving gear, 8-transmission gear, 9-circular ring and 10-motor. 11-driving rod of planting nail, 12-installing the threaded hole of planting nail.

Detailed Description

The following embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention are within the protection scope of the present invention.

Referring to fig. 1, the device for expanding maxillary dental arch by automatic force application comprises a bracket 1, a force application rod 2, a driving mechanism and a guiding mechanism; the stress application rod 2 is connected with a guide mechanism in a sliding mode, the guide mechanism and the driving mechanism enable the stress application rod 2 to translate towards the outer side or the inner side of the support 1, the guide mechanism is fixedly arranged on the support 1, the output end of the driving mechanism is connected with the force input end of the stress application rod 2, the stress application rod 2 is arranged on two sides of the support 1, and the guide mechanism and the driving mechanism enable the stress application rod 2 to translate towards the outer side or the inner side of the support 1; the guide mechanism comprises a guide rail and a guide sliding block, the sliding block can be arranged on the guide rail in a sliding mode, and the sliding block is also connected with the stressing rod 2 and the output end of the driving mechanism.

The screw pitch of the screw rod is not more than 0.2 mm.

The bracket 1, the stressing rod 2, the screw rod and the screw rod sliding block are all made of stainless steel; the edges and corners of the bracket 1, the screw rod sliding block and the screw rod are in smooth transition.

The driving mechanism is arranged on the bracket 1.

In the case of the example 1, the following examples are given,

referring to fig. 1, a guide rail 5 is arranged on a support 1, a guide slider 4 is arranged on the guide rail 5, the guide slider 4 is respectively connected with a force input end of a force applying rod 2 and an output end of a driving mechanism, specifically, the driving mechanism comprises a screw rod 3, a threaded hole is formed in the guide slider 4, the guide slider 4 is in threaded fit with the screw rod 3, the screw rod 3 rotates to drive the guide slider 4 to translate along the axes of the guide rail 5 and the screw rod 3, and the driving end of the screw rod 3 is connected with the output end of a motor 10; the motor 10 is arranged on the support 1, the control end of the motor 10 is connected with the output end of the controller, the power supply device and the controller of the motor 10 are connected with the motor through cables, the number of the screw rods is four, the four screw rods are respectively arranged on two sides of the support 1, and the driving ends of the screw rods are connected with the output end of the motor 10.

As an alternative embodiment, on the basis of embodiment 1, the present invention may also integrally package the power supply device of the motor, the controller, the bracket 1 and the driving mechanism together.

Referring to fig. 2 and embodiment 2, as an alternative embodiment, four guide rails 5 are arranged in parallel, four lead screws 3 are arranged, the lead screws 3 are all provided with lead screw sliders 4, each lead screw 3 includes a first lead screw 31, a second lead screw 32, a third lead screw 33 and a fourth lead screw 34, the first lead screw 31 and the second lead screw 32 are located on the same side of the bracket 1, and the third lead screw 33 and the fourth lead screw 34 are located on the same side of the bracket 1. The driving end of each screw rod 3 is connected with the output end of the motor 10.

Referring to fig. 3, in embodiment 3, on the basis of embodiment 2, as an alternative embodiment, the driving ends of the screw rods 3 are provided with transmission gears 8, the transmission gears 8 are engaged with a driving gear 7, the driving gear 7 is connected with the output end of a motor 10, two motors 10 are provided, the transmission gears of the first screw rod and the second screw rod are engaged with the same driving gear, and the transmission gears of the third screw rod and the fourth screw rod are engaged with the same driving gear; the screw thread directions of the first screw rod 31 and the second screw rod 32 are opposite, the screw thread directions of the third screw rod 33 and the fourth screw rod 34 are opposite, and the screw pitches of the first screw rod 31, the second screw rod 32, the third screw rod 33 and the fourth screw rod 34 are equal; in this embodiment, the transmission gear 8 and the driving gear 7 both adopt spur gears.

Referring to fig. 3, the driving mechanism of the present invention includes four sets of coaxially disposed rings 9, the rings 9 are fixedly connected to the bracket 1, and the number of the rings 9 is at least 2.

Referring to fig. 4, in embodiment 5, on the basis of embodiment 2, as another alternative embodiment, the transmission gears 8 of the first screw 31 and the third screw 33 are meshed with the same driving gear 7, the transmission gears of the second screw 32 and the fourth screw 34 are meshed with the same driving gear 7, and for this embodiment, both the driving gear 7 and the transmission gears 8 are bevel gears.

Referring to fig. 5 and 6, in embodiment 6, on the basis of embodiment 5, only one motor 10 is provided, an output shaft of the motor 10 is connected with a driving rod 6, a driving gear 7 is provided on the driving rod 6, the driving gear 7 is a bevel gear, the driving rod is detachably connected with a bracket, when a screw rod needs to be adjusted, the driving rod is connected with the bracket 1, the driving gear is meshed with the driving gear, the motor is started, the driving rod drives the screw rod to rotate, and then the force application rod is enabled to translate towards the outer side or the inner side of the bracket 1; one or two driving gears 7 can be adopted, and the two driving gears 7 are respectively meshed with the transmission gears 8.

The stress application rod 2 comprises a first stress application rod 21 and a second stress application rod 22, the first stress application rod 21 is arranged close to the inner side of the support 1, the second stress application rod 22 is arranged close to the outer side of the support 1, the first stress application rod 21 is connected with a first guide sliding block, the first guide sliding block is arranged on a first screw rod, the second stress application rod 22 is arranged close to the inner side of the support 1, and the second guide sliding block is arranged on a second screw rod.

Based on embodiment 1, the device disclosed by the invention is packaged into a cuboid shape and comprises a support 1, a button cell, a micro motor, a gear, a micro circuit board, a stress application rod 2 and a shell, wherein the micro circuit board is arranged on the bottom surface of the support 1, a microcontroller is arranged in the micro circuit board and is connected with a control input end of a motor, and the microcontroller controls the stress application frequency and displacement; the button battery is a power supply and is positioned in the center of the bracket 1, and the button battery supplies electric energy to the circuit board and the micro motor; the two driving micro motors are positioned at two sides of the battery and used as driving forces, and force expanding towards two sides is further realized through the micro gears, the expanding force is transmitted to the fixed teeth by the force applying rods to play a role of orthodontic arch expanding, and the force applying rods extend out from two sides of the arch expander and can be fixed with the teeth for use after shape modification by a mechanic; the square box is closed after the processing is finished, so that the square box can work in the mouth safely.

Referring to fig. 7 and 8, as an alternative embodiment, the screw mandrel 3 of the present invention is provided with a driving rod 11 for a planting nail, the driving rod 11 for the planting nail is connected with the screw mandrel 3 by screw thread, both ends of the driving rod 11 for the planting nail are provided with threaded holes 12 for installing the planting nail, and the diameter of the threaded holes 12 is 0.18-0.25 mm; in order to improve the moving stability of the planting nail driving rod, the planting nail driving rod is simultaneously connected with the guide rail 5 in a sliding way; more specifically, the planting nail driving rod is provided with a connecting block for connecting a screw rod and a guide rail, and the connecting block for connecting the screw rod is provided with a threaded hole and is in threaded fit with the screw rod. The connecting block connected with the guide rail is provided with a groove, and the guide rail is in sliding fit with the groove.

As shown in fig. 8, the screw rod 3 and the guide rail 5 extend to the outside of the bracket 1, and the planting nail driving rod 11 is arranged at both sides of the bracket 1.

The clinical implementation steps are as follows:

1. writing a program according to a force value, a deformation quantity and a stress application frequency which are clinically needed, and packaging the arch expander after confirming that no errors exist;

2. adjusting the shape of the stress application rod based on the upper jaw model of the patient, and manufacturing an arch expander;

3. the manufactured bow expander is bonded after being tried in the mouth of a patient properly, and the isolation gasket is removed for electrifying and activating;

4. the patients were given notice and closely observed in the repeated diagnosis.