CN111528981A - Maxillary bone cutting guide plate and manufacturing method thereof - Google Patents

Abstract

The invention discloses a maxillary bone cutting guide plate, which comprises: the base body, the first extension part, the bulge part and the second extension part; the side of the basal body facing the maxilla of the patient is provided with a groove which is matched with the teeth of the patient and is used for positioning and contacting with the teeth of the patient; one end of the first extending part is fixedly connected with the base body, and the other end of the first extending part extends upwards; one end of the bulge is fixedly connected with one end of the base body far away from the first extension part, and the other end of the bulge is fixedly connected with the second extension part; one surface of the second extension part facing the maxilla forms an arc surface attached to the surface of the maxilla, the second extension part is provided with a through hole, the through hole is matched with the tissue to be resected of the patient, and the periphery of the second extension part is consistent with the position of the osteotomy line; through using the prefabricated maxilla to cut bone baffle, combine in order to realize cutting the accurate positioning of bone line with patient's tooth in the operation to reach the effect of accurate excision pathological change position.

Description

Maxillary bone cutting guide plate and manufacturing method thereof

Technical Field

The invention relates to the field of medical treatment, in particular to a maxillary bone cutting guide plate and a manufacturing method thereof.

Background

In the surgical procedure for the removal of a tumor of the maxilla, an osteotomy operation of the maxilla is required. However, determining the range of the maxillary osteotomy is completely dependent on imaging data and clinical experience of a doctor, and thus, a maxillary osteotomy guide is applied to the intraoperative to locate the osteotomy position. At present, the maxillary bone cutting guide plate is mostly fixed by titanium nails, so that the treatment cost of a patient is increased, and secondary trauma is caused; the tooth-supported maxillary bone cutting guide plate has difficulty and inaccuracy in retention during operation due to the fact that CT cannot restore the fine anatomical structure of teeth, and maxillary bone cutting deviation occurs. Therefore, how to obtain the fine anatomical structures of soft and hard tissues such as teeth, oral mucosa and the like, and to manufacture a more accurate maxillary bone osteotomy guide plate, and to improve the accuracy of maxillary bone osteotomy is a clinical problem to be solved urgently in maxillary precise bone osteotomy.

Disclosure of Invention

The invention aims to provide a maxillary bone cutting guide plate and a manufacturing method thereof, and aims to solve the problem that in the prior art, bone cutting operation is difficult to accurately perform according to a preoperative bone cutting line.

To achieve the object, the present invention provides a maxillary bone cutting guide comprising: the base body, the first extension part, the bulge part and the second extension part; the side of the basal body facing the maxilla of the patient is provided with a groove which is matched with the teeth of the patient and is used for positioning and contacting with the teeth of the patient; one end of the first extending part is fixedly connected with the base body, and the other end of the first extending part extends upwards; one end of the bulge is fixedly connected with one end of the base body far away from the first extension part, and the other end of the bulge is fixedly connected with the second extension part; the one side of the jaw of orientation of second extension forms the arcwall face with the laminating of maxilla surface, and the second extension is equipped with the through-hole, and this through-hole and the tissue phase-match that the patient need amputate, and the periphery and the osteotomy line position of second extension are unanimous.

Preferably, the base, the first extension, the boss, and the second extension are made of a photosensitive resin material.

Preferably, the base body, the first extension portion, the protruding portion and the second extension portion are integrally formed through 3D printing.

Preferably, the thickness of the first extension part, the thickness of the lug boss and the thickness of the second extension part are all 3-4 mm.

The present invention also provides a method of manufacturing a maxilla osteotomy guide plate, comprising the steps of:

s1, scanning the maxilla part of the patient through CT to obtain related data and images;

s2, acquiring the fine anatomical morphology of the teeth attached to the maxilla and the anatomical morphology of the soft tissues attached to the mucous membranes of the gingiva, the oral vestibule and the palate through an intraoral scanner;

s3, modeling through simulation software according to the acquired related data and images of dentognathic and maxillofacial anatomy to form a 3D soft and hard tissue model;

s4, slicing the 3D soft and hard tissue model, and introducing related information into a photosensitive resin 3D printer in an STL format;

s5, injecting liquid photosensitive resin into a liquid storage tank of the photosensitive resin 3D printer, and performing 3D printing according to a set printing program to form a primary model of the maxillary bone cutting guide plate;

and S6, cleaning the primary model of the maxillary bone cutting guide plate by using alcohol, and then grinding by using sand paper to form the qualified maxillary bone cutting guide plate.

Preferably, the step S3 includes the following steps:

s31, performing virtual maxillary osteotomy according to the nature and invasion range of the pathological part of the patient, and determining an osteotomy line;

and S32, with the healthy side maxilla as a reference, performing soft and hard tissue reconstruction on the maxilla defect on the affected side of the patient through a reverse solving technology, and storing the reconstructed data in an STL format.

Compared with the prior art, the invention has the advantages that:

through using prefabricated maxilla to cut bone conduction board, combine in order to realize cutting the accurate positioning of bone line with patient's tooth in the operation to reach the effect of accurate excision pathological change tissue, improved the efficiency of operation, alleviateed patient's misery simultaneously.

Drawings

FIG. 1 is a schematic view of a maxillary bone cutting guide of the present invention;

FIG. 2 is a side view of the maxillary bone cutting guide of the present invention;

fig. 3 is a sectional view taken along a-a in fig. 1.

The reference numbers in the figures illustrate:

1. a substrate; 2. a first extension portion; 3. a boss portion; 4. a second extension portion; 5. a groove; 6. an arc-shaped surface; 7. and a through hole.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise specifically stated or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are used in a broad sense, and for example, "connected" may be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements.

Referring to fig. 1, 2 and 3, a maxillary bone cutting guide includes: a base body 1, a first extension part 2, a boss part 3 and a second extension part 4; the side of the basal body 1 facing the maxilla of the patient is provided with a groove 5, and the groove 5 is matched with the teeth of the patient and is used for positioning and contacting with the teeth of the patient; one end of the first extension part 2 is fixedly connected with the base body 1, and the other end extends upwards; one end of the protruding part 3 is fixedly connected with one end of the base body 1 far away from the first extending part 2, and the other end of the protruding part 3 is fixedly connected with the second extending part 4; the side of the second extension part 4 facing the maxilla forms an arc-shaped surface 6 which is jointed with the surface of the maxilla, the second extension part 4 is provided with a through hole 7, the through hole 7 is matched with the tissue to be cut by the patient, and the periphery of the second extension part 4 is consistent with the position of the osteotomy line.

Preferably, the base 1, the first extension portion 2, the boss portion 3 and the second extension portion 4 are all made of a photosensitive resin material, and the base 1, the first extension portion 2, the boss portion 3 and the second extension portion 4 are all integrally formed by 3D printing; in addition, the thicknesses of the first extension part 2, the bulge part 3 and the second extension part 4 are all 3-4 mm; the through hole 7 of the second extension 4 is used to match with a part of the tissue to be cut off, such as tumor tissue, of a patient, so as to avoid the raised tumor tissue and facilitate the observation of a doctor.

When the maxillary osteotomy is performed, the osteotomy line of a patient needs to be accurately determined, so that accurate positioning is necessary; because the side of the basal body 1 facing the maxilla of the patient is provided with the groove 5, the groove 5 is accurately designed and manufactured according to the teeth of the patient, and the groove 5 can be accurately matched with the teeth of the patient when in use, thereby realizing the accurate positioning of the maxilla osteotomy guide plate and creating conditions for determining the osteotomy line.

When the maxillary osteotomy is performed, the maxillary osteotomy guide plate is placed at a proper position, and at the moment, the groove 5 is matched with the teeth of the patient; in addition, because the one end and the base member 1 fixed connection of first extension 2, the other end extends to the maxilla direction, simultaneously because the one end of bellying 3 and the one end fixed connection of first extension 2 are kept away from to base member 1, the other end and second extension 4 fixed connection, consequently base member 1, first extension 2 and bellying 3 respectively with the bottom of patient's tooth, inboard and outside location contact to realize the maxilla and cut bone baffle accurate positioning.

One end of the second extending part 4 is fixedly connected with the protruding part 3, the other end extends upwards, and as one surface of the second extending part facing the maxilla forms an arc-shaped surface 6 which is attached to the surface of the maxilla, when the maxilla osteotomy is performed, the base 1, the first extending part 2 and the protruding part 3 are respectively in positioning contact with the bottom, the inner side and the outer side of the teeth of a patient, and the second extending part 4 is attached to the surface of the maxilla, so that the whole maxilla osteotomy guide plate is accurately positioned relative to the maxilla; when the maxillary osteotomy is performed, a doctor can perform the accurate maxillary osteotomy only along the osteotomy line determined around the second extension part 4, and accurately cuts the diseased tissue of the patient; after the lesion tissues of the patient are cut off, the prefabricated prosthesis can be implanted into the corresponding position to assist the patient to recover the physiological function.

Meanwhile, in order to perform the maxillary osteotomy operation on the patient in time, a corresponding maxillary osteotomy guide plate needs to be prepared in advance; the method for manufacturing the maxilla bone cutting guide plate comprises the following steps:

s1, scanning the maxilla part of the patient through CT to obtain related data and images;

s2, acquiring the fine anatomical morphology of the teeth attached to the maxilla and the anatomical morphology of the soft tissues attached to the mucous membranes of the gingiva, the oral vestibule and the palate through an intraoral scanner;

s3, modeling through simulation software according to the acquired related data and images of dentognathic and maxillofacial anatomy to form a 3D soft and hard tissue model;

s4, slicing the 3D soft and hard tissue model, and introducing related information into a photosensitive resin 3D printer in an STL format;

s5, injecting liquid photosensitive resin into a liquid storage tank of the photosensitive resin 3D printer, and performing 3D printing according to a set printing program to form a primary model of the maxillary bone cutting guide plate;

and S6, cleaning the primary model of the maxillary bone cutting guide plate by using alcohol, and then grinding by using sand paper to form the qualified maxillary bone cutting guide plate.

Meanwhile, step S3 includes the steps of:

s31, performing virtual maxillary osteotomy according to the nature and invasion range of the pathological part of the patient, and determining an osteotomy line;

and S32, with the healthy side maxilla as a reference, performing soft and hard tissue reconstruction on the maxilla defect on the affected side of the patient through a reverse solving technology, and storing the reconstructed data in an STL format.

Through using prefabricated maxilla to cut bone conduction board, combine in order to realize cutting the accurate positioning of bone line with patient's tooth in the operation to reach the effect that the pathological change position was cut to the accuracy, improved the efficiency of operation, alleviateed patient's misery simultaneously.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims (6)

1. A maxillary bone cutting guide comprising: the base body, the first extension part, the bulge part and the second extension part; the side of the basal body facing the maxilla of the patient is provided with a groove which is matched with the teeth of the patient and is used for positioning and contacting with the teeth of the patient; one end of the first extending part is fixedly connected with the base body, and the other end of the first extending part extends upwards; one end of the bulge is fixedly connected with one end of the base body far away from the first extension part, and the other end of the bulge is fixedly connected with the second extension part; the one side of the jaw of orientation of second extension forms the arcwall face with the laminating of maxilla surface, and the second extension is equipped with the through-hole, and this through-hole and the tissue phase-match that the patient need amputate, and the periphery and the osteotomy line position of second extension are unanimous.

2. The maxillary bone cutting guide of claim 1, wherein: the base body, the first extension portion, the boss portion and the second extension portion are all made of a photosensitive resin material.

3. The maxillary bone cutting guide of claim 2 wherein: the base body, the first extending portion, the protruding portion and the second extending portion are all integrally formed through 3D printing.

4. The maxillary bone cutting guide of claim 1, wherein: the thicknesses of the first extension part, the bulge part and the second extension part are all 3-4 mm.

5. A method of making a maxilla bone cutting guide comprising the steps of:

s1, scanning the maxilla part of the patient through CT to obtain related data and images;

s2, acquiring the fine anatomical morphology of the teeth attached to the maxilla and the anatomical morphology of the soft tissues attached to the mucous membranes of the gingiva, the oral vestibule and the palate through an intraoral scanner;

s3, modeling through simulation software according to the acquired related data and images of dentognathic and maxillofacial anatomy to form a 3D soft and hard tissue model;

s4, slicing the 3D soft and hard tissue model, and introducing related information into a photosensitive resin 3D printer in an STL format;

s5, injecting liquid photosensitive resin into a liquid storage tank of the photosensitive resin 3D printer, and performing 3D printing according to a set printing program to form a primary model of the maxillary bone cutting guide plate;

and S6, cleaning the primary model of the maxillary bone cutting guide plate by using alcohol, and then grinding by using sand paper to form the qualified maxillary bone cutting guide plate.

6. The method of manufacturing a maxilla bone cutting guide according to claim 5, wherein the step S3, comprises the steps of:

s31, performing virtual maxillary osteotomy according to the nature and invasion range of the pathological part of the patient, and determining an osteotomy line;

and S32, with the healthy side maxilla as a reference, performing soft and hard tissue reconstruction on the maxilla defect on the affected side of the patient through a reverse solving technology, and storing the reconstructed data in an STL format.

Images