CN216124551U

CN216124551U - Orthognathic osteotomy guiding developing device

Info

Publication number: CN216124551U
Application number: CN202121623276.7U
Authority: CN
Inventors: 李鹏; 史超毅; 王佳音; 吴令亚; 苏雨欣; 张现泽; 卢江; 陈云敏
Original assignee: Chongqing Zhongnuohengkang Biotechnology Co ltd
Current assignee: Chongqing Zhongnuohengkang Biotechnology Co ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2022-03-25
Anticipated expiration: 2031-07-16

Abstract

The utility model discloses a orthognathic osteotomy guiding developing device, which is characterized in that: the bone cutting machine comprises a guide plate (1), wherein a bone cutting groove (2) and a guide hole (3) are formed in the guide plate (1), and a developing position (4) is located at the positions of small round holes on the periphery of the guide plate. The utility model adopts a digital technology and a 3D printing technology, can accurately design the operation guide plate which is most suitable for a patient, can accurately cut bones in an operation through predicting the positions, the directions and the angles of the guide hole (3) of a key point of jaw reconstruction and the osteotomy groove (2) and through virtual planning design, thereby increasing the operation efficiency, increasing the arc surface transition at the edge (6) of the guide plate (3) and reducing the risk of scratching other parts in the operation.

Description

Orthognathic osteotomy guiding developing device

Technical Field

The utility model relates to a 3D printing device for maxilla surgery, in particular to a maxilla osteotomy guiding developing device.

Background

The facial appearance is the most important characteristic of the whole human body image, the facial appearance has an inseparable relation with the soft tissues and the bone tissues of the face, especially the position distribution of the bone tissues accounts for a large reason, and the orthognathic surgery improves the face appearance and the occlusion function by changing the original shape, position and angle of the bone. The abnormal growth of jaw bone is caused by heredity, congenital factors or bad habits in children in a large part of patients, and segmental defects of jaw bone are caused by trauma in a small part of patients, so that the facial appearance of the patients is greatly influenced, and the life quality of the patients is influenced. Orthognathic surgery is a widely used surgery in clinical cases and is commonly accepted by doctors and patients. The chewing and occluding functions of the patient are improved while the appearance of the patient is restored.

In the orthognathic bone operation, when the maxilla is cut, the most important is the cutting position and angle, the maxillofacial part has rich blood supply and complex anatomical physiological structure, and the complications such as massive hemorrhage, damage of neurovascular system, tooth root damage and the like can be caused by carelessness in the cutting process, and the orthognathic position planned by the operation is greatly influenced. Therefore, the bone cutting position of the doctor is one of the key points in the whole operation, and the doctor can accurately lower the knife according to the preoperative planning scheme or not with great uncertainty, so that the success rate of the operation is reduced. With the development of digitization and medicine, the digital guide plate for orthognathic surgery plays a significant role in orthognathic surgery.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a orthognathic osteotomy guiding developing device, which overcomes the defects of the existing osteotomy device and has the characteristic of accurate osteotomy through a 3D printing simulation structure.

The technical problem to be solved by the utility model is realized by the following technical scheme:

a orthognathic osteotomy guiding developing device comprises a guide plate, wherein an osteotomy groove and a guide hole are formed in the guide plate, and a developing position is located at the position of small circular holes on the periphery of the guide plate; and a titanium alloy small cylinder fixedly connected to the guide plate is arranged in the developing position.

After the guide plate is placed on the surface of a jaw bone, the polymer guide plate is made of polymer materials, so that the polymer guide plate can not absorb development during development, and the development machine can not improve the state of the guide plate during operation; because the titanium alloy small cylinder is added around the guide plate, the placement state of the guide plate can be observed and analyzed by observing the position of the titanium alloy small cylinder during development, and the problem that the state of the guide plate cannot be improved in the conventional development is solved.

Preferably, the guide plate is fixedly connected with a holder.

The device is a 3D printing model simulation use state device.

For accurate osteotomy, the device virtually designs the positions, the directions and the angles of a guide hole of a guide plate and an osteotomy groove for simulating jaw reconstruction through a 3D printing model. The angle is combined with the actual situation and is changed at any time. For example, the bone cutting groove and the guide plate which are positioned above the guide plate of the guide hole and the bone cutting groove form an included angle of 90 degrees with the guide plate, the guide hole is divided into 4, the included angle of the upper two and the guide plate is 108 degrees, and the included angle of the lower side and the guide plate is 78 degrees.

Preferably, the 3D printing is electron beam metal printing with a printing precision within 0.01 MM.

Preferably, the edge of the guide plate is a circular arc surface.

Preferably, the guide plate is made of medical resin material or titanium alloy material.

Preferably, the height of the osteotomy groove is about 8-12MM, and the guide plate has a thickness of 2-4 MM.

The utility model has the following beneficial effects:

the utility model relates to an orthognathic osteotomy guiding developing device which adopts a digital technology to carry out scheme design, realizes accurate conversion, carries out three-dimensional reconstruction on CT data of a focus part of a patient, carries out accurate measurement on the size of the focus part, designs an operation scheme suitable for the patient according to the measurement data by a doctor, then designs an operation guide plate suitable for the operation scheme through the digital technology, carries out intraoperative simulation in advance, carries out 3D printing on a model and the guide plate after confirming no error, and simulates the use state of the guide plate.

This mode adopts digital technology and 3D printing technique, and the doctor can be accurate the most suitable patient's of design operation baffle before the art, and the doctor can discuss treatment scheme before the art, and the operation step predicts the key point that the jaw is rebuild, and guiding hole and the position of cutting the bone groove, direction, angle, through virtual planning design can accurately cut the bone in the operation to increase the arc surface transition at baffle edge, thereby reduce the risk of fish tail other positions in the art. Thereby increasing the efficiency of the operation and reducing the risk of the operation

Drawings

FIG. 1-1 is a schematic view of a structure according to the present invention

FIG. 1-2 is a schematic view of the structure of the usage state of FIG. 1-1

FIG. 2-1 is another schematic view of the present invention

FIG. 2-2 is a schematic view of the structure of the usage state of FIG. 2-1

Numbering in the figures: 1-guide plate, 2-osteotomy groove, 3-guide hole, 4-development position, 5-holder, 6-guide plate edge, 7-titanium alloy small cylinder

Detailed Description

The orthognathic osteotomy guiding visualization device comprises a guide plate 1, wherein the guide plate is provided with an osteotomy groove 2, a guide hole 3 and a visualization position 4 which are positioned at small round holes on the periphery of the guide plate.

The orthognathic osteotomy guiding visualization device of fig. 1-1 operates and uses the method:

the device is prepared by simulating a 3D printing technology, in the operation process, a patient is anesthetized, the jaw bone epidermis needing bone cutting is peeled off, the device is tightly attached to the jaw bone surface, a guide needle is inserted into a guide hole and fixed, and a doctor cuts the bone according to the position of a bone cutting groove 2.

Another orthognathic osteotomy guiding and developing device as shown in fig. 2-1 and 2-2 comprises a guide plate 1, wherein the guide plate is provided with an osteotomy groove 2, a guide hole 3, a developing position 4 and a holder 5. A titanium alloy small cylinder 7 is arranged in the developing position 4.

2-1A orthognathic osteotomy guiding visualization device operating and using method:

the mandible which needs to be cut is peeled off, the device is tightly attached to the position of the cut bone, the guide needle is inserted into the guide hole 3 and fixed, and the cut bone is carried out according to the position of the cut bone groove 2.

Compared with the prior art, the technical scheme of the embodiment has the following beneficial effects:

1. in the prior art, as some bone cutting instruments are used in the bone cutting process, the risk of fracture of the traditional medical resin guide plate can be caused, the guide plate can be made of a titanium alloy material before an operation according to the operation difficulty, the hardness of the titanium alloy guide plate is high, the risk of fracture of the guide plate is avoided, the 3D printing is electron beam metal printing, and the printing precision can be controlled to be 0.01 MM.

2. Because the traditional guide plate adopts medical resin, a doctor cannot observe the guide plate placing condition through a developing device in the operation process. According to the utility model, the developing position 4 is arranged around the guide plate 1, the titanium alloy small cylinder 7 is additionally arranged in the developing position, the guide plate placement condition can be observed in real time through the developing position 4 in the operation process, and the operation precision is improved.

3. The height of the traditional guide plate osteotomy groove is low, so that the osteotomy angle is inconsistent with the scheme possibly predicted by an operation, the height of the osteotomy groove is increased to 8-12MM, and the osteotomy angle is more accurate.

4. The utility model can also be added with the holder 5, and the holder 5 can be used for holding when the hole is formed, so that the utility model is more convenient and faster.

Claims

1. The orthognathic osteotomy guiding developing device is characterized by comprising a guide plate (1), wherein an osteotomy groove (2) and a guide hole (3) are formed in the guide plate (1), and a developing position (4) is positioned at a small circular hole position on the periphery of the guide plate; and a titanium alloy small cylinder (7) fixedly connected to the guide plate is arranged in the developing position (4).

2. The orthognathic osteotomy guide visualization device according to claim 1, wherein: the guide plate is fixedly connected with a holder (5).

3. The orthognathic osteotomy guiding visualization device according to claim 1 or 2, wherein: the developing device is a 3D printing model simulation use state device.

4. The orthognathic osteotomy guiding visualization device according to claim 3, wherein the device virtually designs the position, direction, angle of the guide hole (3) and osteotomy groove (2) of the guide plate (1) simulating jaw reconstruction by 3D printing model.

5. The orthognathic osteotomy guiding visualization device according to claim 4, wherein the guiding hole and the osteotomy groove are positioned above the guide plate, and the osteotomy groove and the guide plate form an included angle of 90 degrees; the guide holes are divided into 4, the included angle between the upper two guide holes and the guide plate is 108 degrees, and the included angle between the lower two guide holes and the guide plate is 78 degrees.

6. The orthognathic osteotomy guide visualization device according to claim 3, wherein the 3D printing is electron beam metal printing.

7. The orthognathic osteotomy guiding visualization device according to claim 1 or 2, wherein: the edge (6) of the guide plate is an arc surface.

8. The orthognathic osteotomy guiding visualization device according to claim 1 or 2, wherein the guide plate is a medical resin material or a titanium alloy material.

9. The orthognathic osteotomy guide visualization device according to claim 1 or 2, wherein the osteotomy groove has a height of about 8-12 mm; the thickness of the guide plate is 2-4 mm.