Orthognathic intermaxillary traction screw placement guide device

Abstract

The present invention discloses an orthognathic intermaxillary traction pin placement guide device, which includes a fixing part and a guide part, wherein the fixing part and the guide part are connected in an integral manner, wherein the fixing part is adapted to human teeth and fixed on human teeth, wherein a guide channel is provided on the guide part, and the traction pin is introduced by sliding along the guide channel. The fixing part is used for fixing with human teeth to realize fixing the guide device on the teeth, and the guide part is used for guiding the placement of the traction pin. Through the setting of the guide channel, the traction pin can slide to a designated position through the guide channel, and the accurate placement of the traction pin is completed, thereby realizing the positioning function. Moreover, the guide channel also has a limiting function, and the traction pin can determine the direction of the placement along the guide channel, and no deviation will occur during the placement process, thereby ensuring accurate and efficient placement of the pin.

Description

Technical Field

[0001] The invention belongs to the technical field of intermaxillary surgery, and in particular relates to an orthognathic intermaxillary traction nail placement guide device. Background Art

[0002] As people's living standards improve, their aesthetic requirements have increased, but there is also a certain proportion of malocclusion in the population, so the number of people undergoing orthodontic and orthognathic combined treatment is gradually increasing. During the preoperative and postoperative treatment of orthognathic surgery, traction pins are required to complete inter-jaw traction or prevent tooth movement during orthodontic correction. The position of the traction pin is crucial for tooth correction, so how to ensure the accurate implantation of the traction pin is of great significance to the treatment of orthognathic surgery.

[0003] In the patent with the patent number "CN203138668U" and the name "Positioning and guiding component for implanting intermaxillary traction nails", a positioning and guiding component for implanting intermaxillary traction nails is disclosed, which includes a dentition fixing mold, a titanium nail guide ring and a connecting rod. The dentition fixing mold is placed on the dentition, and a guide hole for positioning the traction nail is provided in the center of the titanium nail guide ring. A notch is provided on one side of the titanium nail guide ring to allow the traction nail to enter the guide hole laterally.

[0004] The above-mentioned positioning guide component positions the traction pin according to the lateral and panoramic images relying on the physician's clinical experience. This is too dependent on the physician's experience and has great uncertainty, which can easily lead to unreasonable pin placement, causing the traction pin to cause certain damage or compression to the teeth and tooth roots, thus affecting the displacement of the teeth after surgery. Summary of the invention

[0005] In order to solve the above problems, the primary purpose of the present invention is to provide an orthognathic intermaxillary traction nail placement guide device, which realizes the accurate introduction of the traction nail and ensures the stability of the structure during use.

[0006] Another object of the present invention is to provide an orthognathic intermaxillary traction nail placement guide device, which will not cause the traction nail to deviate during use and can ensure the accuracy of the traction nail introduction.

[0007] Another object of the present invention is to provide a method for manufacturing an orthognathic intermaxillary traction nail placement guide device, which is constructed according to 3D printing technology, fits the tooth structure better, and has a higher degree of fit.

[0008] To achieve the above objectives, the technical solution of the present invention is as follows.

[0009] A guide device for placing an orthognathic intermaxillary traction pin, the device comprises a fixing part and a guiding part, the fixing part and the guiding part are connected in an integral manner, and is characterized in that the fixing part is adapted to human teeth and fixed on human teeth, and the guiding part is provided with a guiding channel, and the traction pin is slid and introduced along the guiding channel. The fixing part is used for fixing with human teeth to realize fixing the guide device on the teeth, and the guiding part is used for guiding the placement of the traction pin. Through the setting of the guiding channel, the traction pin can slide to a specified position through the guiding channel, and the accurate placement of the traction pin is completed, realizing the positioning function. In addition, the guiding channel also has a limiting function, and the traction pin can determine the direction of the placement along the guiding channel, and no deviation will occur during the placement process, thereby ensuring accurate and efficient placement of the pin.

[0010] Furthermore, the guide portion is provided with a guide cylinder, and the inner side wall of the guide cylinder forms the guide channel. The setting of the guide cylinder utilizes the inner side wall's function of supporting and limiting the traction pin to ensure that the traction pin can slide smoothly to the designated position.

[0011] Furthermore, the fixing part is wrapped around the inner and outer sides of the human teeth. The fixing part is wrapped around the inner and outer sides of the teeth, rather than the traditional wrapping of the entire teeth, so that it is not limited by whether there is a gap between the teeth during use. The fixing part of the present invention can form a clamping and fixing structure on the inner and outer sides of the teeth, which is flexible and more convenient to use.

[0012] Furthermore, the guide cylinder is formed by enclosing two or more arc-shaped cover plates, and the two or more arc-shaped cover plates are connected by a connecting piece, and after the connecting piece is broken, the two or more arc-shaped cover plates are separated from each other. The setting of the connecting piece enables several arc-shaped cover plates to enclose and form a guide channel, ensuring the accurate positioning of the traction nail, and the rupture of the connecting piece is caused by squeezing the side wall of the guide cylinder during the insertion of the traction nail. After the rupture of the connecting piece, it means that the traction nail has been inserted to a certain depth, meeting the accurate positioning requirement. At this time, the rupture of the connecting piece can facilitate the removal of the guide device and the use of the guide device.

[0013] Furthermore, a connecting rod extends from the fixing part, and the guide part is fixedly connected to the fixing part through the connecting rod; a bending part is provided on the connecting rod, and after the bending part is bent and deformed, the position of the guide channel is reversely changed. The setting of the connecting rod enables the guide channel to be set between the jaws of the orthognathic, and the connecting rod can be set in different bending shapes according to the position of the guide channel to meet the requirements of the setting position of the guide channel.

[0014] Furthermore, the guide channel is manufactured according to the desired position and profile of the traction pin. The position of the guide channel is set according to medical needs. The guide channel is set according to the profile of the traction pin, which also ensures that the traction pin can be accurately placed according to the guide channel.

[0015] Furthermore, the fixing part, the guiding part and the connecting rod all comprise safe materials with biocompatibility and cytotoxicity detection, so as to facilitate the use of the guiding device.

[0016] Furthermore, the device is made in one piece by 3D printing technology. By using 3D printing technology, it is possible to produce a fixing part that can be stably maintained on the teeth and a guide channel with an accurate position according to the position and contour of human teeth.

[0017] Furthermore, the specific steps of the manufacturing method of the guide device are as follows:

[0018] S1: Obtain the patient's intraoral scan model through an intraoral scanner;

[0019] S2: Importing the patient's intraoral data information obtained by the intraoral scanner into the 3D modeling software to form a three-dimensional oral model;

[0020] S3: Design the placement of traction pins on the three-dimensional oral model according to the 3D modeling software;

[0021] S4: Design the guide device according to the three-dimensional oral model and the placement of the traction pins;

[0022] S5: Print out the guide device according to the 3D printing technology.

[0023] Scan the patient's oral cavity, model the oral structure, design the position of the traction pin based on the oral model, and design the model of the guide device according to the oral model and the placement of the traction pin. The model of the guide device is printed using 3D printing technology. In summary, the guide device manufactured by modeling and 3D printing can ensure that the guide device can fit with human teeth and ensure the stability of the guide device during use. The position of the guide channel manufactured by this method is also more accurate, ensuring the accuracy of the introduction of the traction pin. Among them, the depth of the guide channel can be increased by increasing the thickness of the guide device, so that it forms a guiding cylindrical structure.

[0024] The present invention fixes the guide device on the tooth through the fixing part, and the guide part is used to guide the placement of the traction nail. Through the setting of the guide channel, the traction nail can slide to the specified position through the guide channel, and the accurate placement of the traction nail is completed, and the positioning function is realized. In addition, the guide channel also has a limiting function. The traction nail can determine the direction of the nail placement along the guide channel, and no deviation will occur during the nail placement process, thereby ensuring accurate and efficient nail placement. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the first viewing angle of the present invention.

[0026] Figure 2 It is a structural schematic diagram of the second viewing angle of the present invention. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] Reference Figure 1-2 As shown, a guide device for placing an orthognathic intermaxillary traction pin of the present invention is shown, and the device comprises a fixing part 1 and a guiding part 2, wherein the fixing part 1 and the guiding part 2 are connected in an integral manner, the fixing part 1 is adapted to human teeth, and the fixing part 1 is fixed on human teeth, and a guiding channel 21 is provided on the guiding part 2, and the traction pin (not shown) is slidably introduced along the guiding channel 21. The fixing part 1 is used to fix with human teeth, so as to fix the guide device on the teeth, and the guiding part 2 is used to guide the placement of the traction pin. Through the setting of the guiding channel 21, the traction pin can slide to the designated position through the guiding channel 21, and the accurate placement of the traction pin is completed, so as to realize the positioning function. In addition, the guiding channel 21 also has a limiting function, and the traction pin can determine the direction of the placement along the guiding channel 21, and no deviation will occur during the placement process, so as to ensure accurate and efficient placement of the pin.

[0029] The guide portion 2 is provided with a guide cylinder 22, and the inner wall of the guide cylinder 22 forms the guide channel 21. The guide cylinder 22 is provided to ensure that the traction pin can slide smoothly to the designated position by using the inner wall of the guide cylinder to support and limit the traction pin.

[0030] The fixing part 1 is wrapped around the inner and outer sides of the human teeth. The fixing part 1 is wrapped around the inner and outer sides of the teeth, rather than the traditional wrapping of the entire teeth, so that it is not limited by whether there is a gap between the teeth during use. The fixing part 1 of the present invention can form a clamping and fixing structure on the inner and outer sides of the teeth, which is flexible and more convenient to use.

[0031] The guide cylinder 22 is formed by enclosing two or more arc-shaped cover plates 221, and the two or more arc-shaped cover plates 221 are connected by a connecting piece 222, and after the connecting piece 222 is broken, the two or more arc-shaped cover plates 221 are separated from each other. The setting of the connecting piece 222 enables several arc-shaped cover plates 221 to enclose and form the guide channel 21, ensuring the accurate positioning of the traction nail, and the breaking of the connecting piece 222 is caused by squeezing the side wall of the guide cylinder 22 during the insertion of the traction nail. After the breaking of the connecting piece 222, it means that the traction nail has been inserted to a certain depth, meeting the accurate positioning requirement. At this time, the breaking of the connecting piece 222 can facilitate the removal of the guide device and the use of the guide device.

[0032] The fixing part 1 is provided with a connecting rod 11, and the guide part 2 is fixedly connected to the fixing part 1 through the connecting rod 11; the connecting rod 11 is provided with a bending part 12, and after the bending part 12 is bent and deformed, the position of the guide channel 21 is reversely changed. The setting of the connecting rod 11 enables the guide channel 21 to be set between the jaws of the orthognathic, and the connecting rod 11 can be set with different bending shapes according to the position of the guide channel 21 to meet the requirements of the setting position of the guide channel 21.

[0033] The guide channel 21 is manufactured according to the desired position and profile of the traction pin. The position of the guide channel 21 is set according to medical needs. The guide channel 21 set according to the profile of the traction pin also ensures that the traction pin can be accurately placed according to the guide channel 21.

[0034] The fixing part 1, the guiding part 2 and the connecting rod 11 are all made of safe materials with biocompatibility and cytotoxicity detection, which facilitates the use of the guiding device.

[0035] The device is made in one piece by 3D printing technology. By using 3D printing technology, it is possible to produce a fixing part 1 that can be stably held on the teeth and a guide channel 21 that is accurately positioned according to the position and contour of human teeth.

[0036] The specific steps of the manufacturing method of the guide device are as follows:

[0037] S1: Obtain the patient's intraoral scan model through an intraoral scanner;

[0038] S2: Importing the patient's intraoral data information obtained by the intraoral scanner into the 3D modeling software to form a three-dimensional oral model;

[0039] S3: Design the placement of traction pins on the three-dimensional oral model according to the 3D modeling software;

[0040] S4: Design the guide device according to the three-dimensional oral model and the placement of the traction pins;

[0041] S5: Print out the guide device according to the 3D printing technology.

[0042] Scan the patient's oral cavity, model the oral structure, design the position of the traction pin based on the oral model, and design the model of the guide device according to the oral model and the placement of the traction pin. The model of the guide device is printed using 3D printing technology. In summary, the guide device manufactured by modeling and 3D printing can ensure that the guide device can fit with human teeth and ensure the stability of the guide device during use. The position of the guide channel manufactured by this method is also more accurate, ensuring the accuracy of the introduction of the traction pin. Among them, the depth of the guide channel can be increased by increasing the thickness of the guide device, so that it forms a guiding cylindrical structure.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An orthognathic intermaxillary traction nail placement guide device, the device comprises a fixing part and a guiding part, the fixing part and the guiding part are integrally connected, characterized in that: The fixing part is adapted to the human teeth and fixed on the human teeth. The guide part is provided with a guide channel, and the traction pin is slidably introduced along the guide channel. The guide portion is provided with a guide cylinder, and the inner side wall of the guide cylinder forms the guide channel; The guide cylinder is formed by enclosing two or more arc-shaped cover plates, and the two or more arc-shaped cover plates are connected by a connecting piece, and after the connecting piece is broken, the two or more arc-shaped cover plates are separated from each other; A connecting rod extends from the fixing portion, and the guide portion is fixedly connected to the fixing portion via the connecting rod; a bending portion is provided on the connecting rod, and after the bending portion is bent and deformed, the position of the guide channel changes.

2. The orthognathic intermaxillary traction nail placement guide device according to claim 1, characterized in that: The fixing part is wrapped around the inner and outer sides of the human tooth.

3. The orthognathic intermaxillary traction nail placement guide device according to claim 1, characterized in that: The guide channel is manufactured according to the desired position and contour of the traction pin.

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