CN219022453U

CN219022453U - Oral bone tissue repair system

Info

Publication number: CN219022453U
Application number: CN202221640394.3U
Authority: CN
Inventors: 刘伟鸿; 党晓兵; 张春雨; 陈贤帅
Original assignee: Guangdong Jianchi Biotechnology Co ltd
Current assignee: Guangdong Jianchi Biotechnology Co ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2023-05-16
Anticipated expiration: 2032-06-28

Abstract

The utility model relates to the technical field of medical appliances and discloses an oral bone tissue repair system which comprises a reticular framework and a repair body coated on the reticular framework, wherein a biological shielding film is arranged on the surface of the repair body, and the reticular framework is made of magnesium alloy or pure magnesium. Compared with the prior art, the prefabricated prosthesis shortens the operation time and can better fit the anatomical outline of the defect area; the absorbable magnesium alloy net-shaped framework provides a certain supporting effect for the structure, so that the structure can maintain a stable osteogenic space in a certain time; the reticular framework is absorbable magnesium alloy, and is taken out without secondary operation, so that the pain of a patient is greatly reduced; the absorbable magnesium alloy reticular framework is embedded into the prosthesis, so that the problems of possible membrane exposure and the like caused by abrasion and stimulation to mucous membranes and soft tissues are avoided.

Description

Oral bone tissue repair system

Technical Field

The utility model relates to the technical field of medical appliances, in particular to an oral bone tissue repair system.

Background

Alveolar bone resorption atrophy caused by congenital tooth deficiency or tooth extraction and tooth deficiency is a common problem in oral medicine clinic, and for patients with severe alveolar bone defects, horizontal or vertical bone augmentation surgery is often required to be matched in the early stage to increase bone mass so as to enable the patients to meet later stage planting conditions. The guided bone regeneration technique (Guided Bone Regeneration, GBR) is one of the most widely used methods in bone augmentation surgery. The Guided Bone Regeneration (GBR) technique is to fill autologous bone, allogeneic bone, xenogeneic bone or a combination thereof in a bone defect area, wrap a biological barrier membrane on the surface, block the growth of soft tissue cells which grow faster, maintain a certain osteogenic space and ensure the growth of osteoblasts and blood vessels. The technical key points of the method comprise two key factors affecting bone formation: barrier time and stability of the barrier film. The biological barrier membrane is classified into an absorbable membrane, which is usually a collagen membrane or the like, and a non-absorbable membrane, which is usually a titanium membrane, a polytetrafluoroethylene membrane, a titanium-reinforced polytetrafluoroethylene membrane or the like, depending on whether it is decomposable in the body.

For the two methods, the absorbable membrane is used without secondary operation, but the absorbable membrane has higher price, the absorbable membrane has poorer mechanical property, is difficult to maintain stable osteogenesis space and easily affects the final osteogenesis effect; the non-resorbable membranes provide adequate barrier time for bone tissue growth, but still require secondary surgical removal because they cannot be broken down in vivo, and may also suffer from problems such as soft tissue adhesion and bone tissue ingrowth that make it difficult to remove and exposure of the titanium membrane that may result from the use of the titanium membrane.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to provide an oral bone tissue repair system, which combines the advantages of an absorbable membrane and a non-absorbable membrane, has good biocompatibility and high mechanical property, is easy to degrade and can be absorbed by a human body, and does not need to be taken out by secondary operation.

Based on the above, the utility model provides an oral bone tissue repair system, which comprises a reticular framework capable of being absorbed by a human body and a repair body which is coated on the reticular framework and can be absorbed by the human body, wherein a biological shielding film which is coated on the repair body is arranged on the outer surface of the repair body.

In some embodiments of the present application, the edge of the mesh skeleton is provided with a retention nail hole, and a retention bone nail is arranged in the retention nail hole in a penetrating manner.

In some embodiments of the present application, 1 to 3 retention nail holes are provided, and each retention nail hole is internally penetrated with the retention bone nail.

In some embodiments of the present application, the thickness of the mesh skeleton is 0.1-0.5mm.

In some embodiments of the present application, the mesh skeleton is made of an absorbable magnesium alloy.

In some embodiments of the present application, the composition of the prosthesis comprises 1% -20% of animal-derived collagen.

Compared with the prior art, the embodiment of the utility model provides an oral bone tissue repair system, which has the beneficial effects that:

the utility model provides an oral bone tissue repair system which comprises a reticular framework capable of being absorbed by a human body and a prosthesis which is coated with the reticular framework and can also be absorbed by the human body, wherein the surface of the prosthesis is covered with an absorbable biological shielding film. The reticular framework is made of magnesium alloy, the components of the prosthesis comprise 1% -20% of animal-derived collagen such as pig collagen, and the rest components are artificial bone repair materials such as bioceramics, calcium phosphate bone cement, hydroxyapatite, bioactive glass and the like. The animal-derived collagen enables the prosthesis to maintain a certain form and to have a certain plasticity, and the artificial bone repair material has bone conduction and bone regeneration effects, can be completely degraded and absorbed and has a certain osteogenesis induction capability. The prefabricated and molded prosthesis shortens the operation time and can better fit the anatomical outline of the defect area; the absorbable magnesium alloy net-shaped framework provides a certain supporting effect for the structure, so that the structure can maintain a stable osteogenic space in a certain time; the reticular framework is absorbable magnesium alloy, and is taken out without secondary operation, so that the pain of a patient is greatly reduced; the absorbable magnesium alloy reticular framework is embedded into the prosthesis, so that the problems of possible membrane exposure and the like caused by abrasion and stimulation to mucous membranes and soft tissues are avoided.

Drawings

FIG. 1 is a schematic diagram of an oral bone tissue repair system according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram illustrating the assembly of an oral bone repair system according to an embodiment of the present utility model;

fig. 3 is a cross-sectional view of an oral bone tissue repair system according to an embodiment of the utility model.

In the figure, 1, a net-shaped framework; 2. a prosthesis; 3. a biological barrier membrane; 4. a retention peg hole; 5. a retention bone screw; 6. alveolar bone.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

It should be understood that the terms "front", "rear", etc. are used in the present utility model to describe various information, but the information should not be limited to these terms, which are only used to distinguish the same type of information from each other. For example, "front" information may also be referred to as "rear" information, and "rear" information may also be referred to as "front" information, without departing from the scope of the utility model.

As shown in fig. 1 to 3, an embodiment of the present utility model provides an oral bone tissue repair system, which includes a magnesium alloy mesh skeleton 1 and a prosthesis 2 coated on the mesh skeleton 1, wherein the prosthesis 2 is disposed on the surface of an alveolar bone 6 to be repaired, and the outer surface of the prosthesis 2 is provided with a biological barrier membrane 3 coated on the prosthesis 2. Specifically, the composition of the prosthesis 2 contains 1% -20% of animal-derived collagen, such as pig collagen, and the rest is the existing artificial bone repair material, such as bioceramic, calcium phosphate bone cement, hydroxyapatite, bioactive glass and the like, belonging to the combination of one or more materials. The animal-derived collagen enables the prosthesis 2 to maintain a certain shape and to have a certain plasticity, and the artificial bone repair material has bone conduction and bone regeneration effects, can be completely degraded and absorbed and has a certain osteogenesis induction capability. The prefabricated and molded prosthesis 2 shortens the operation time and can better fit the anatomical outline of the defect area; the absorbable magnesium alloy net framework 1 provides a certain supporting effect for the structure, so that the structure can maintain a stable osteogenic space in a certain time; the reticular framework 1 is absorbable magnesium alloy, and is taken out without secondary operation, so that the pain of a patient is greatly reduced; the absorbable magnesium alloy reticular framework 1 is embedded into the interior of the prosthesis 2, so that the problems of possible membrane exposure and the like caused by abrasion and stimulation to mucous membranes and soft tissues are avoided.

Further, the prosthesis 2 in the present application may be of a customized form, i.e., one that conforms to the defect form of the alveolar bone 6, or may be of a matched form, i.e., one that is prefabricated in various sizes for typical alveolar bone defect areas.

Further, in some embodiments of the present application, the mesh skeleton 1 is made of a magnesium alloy material or pure magnesium, and the magnesium alloy material has a certain mechanical strength, so that the prosthesis 2 can be supported, and meanwhile, the magnesium alloy material can be absorbed and degraded by a human body, so that the prosthesis can be taken out without a secondary operation. Further, the edge of the net-shaped framework 1 is provided with a retention nail hole 4. Specifically, the reticular framework 1 is a reticular or curved surface structure with pores, the whole section form of the reticular framework is in an inverted L shape, the turning part is in smooth transition through a round angle, the pore size is 0.5-7mm, and the pore shape can be triangle or polygon, round or irregular shape, and the like. The retention nail hole 4 is a circular ring-shaped sheet structure and is positioned at the edge of the reticular framework 1, and is connected with the reticular framework 1 through a straight rod, the setting position of the retention nail hole is avoided from the adjacent tooth root and important anatomical structures, and the inner diameter of the retention nail hole 4 is matched with the diameter of the retention bone nail 5, and the range is between 0.5mm and 3 mm. While the number of the retention nail holes 4 depends on the size of the defect, the two-wall or three-wall defect caused by the defect of a small and medium bone such as a single tooth is suitable for 1-3 retention nail holes 4, and the severe alveolar ridge atrophy is especially arranged as 2-6 retention nail holes 4 under the condition that bone resorption occurs in a plurality of continuous teeth.

Further, in some embodiments of the present application, the thickness of the magnesium alloy mesh skeleton 1 is 0.1-0.5mm, and the mesh skeleton 1 is provided with a certain thickness so as to provide a certain supporting effect before being degraded, and maintain a stable osteogenic space. Meanwhile, the magnesium alloy reticular framework 1 has good biocompatibility with bone tissues, and reduces the pain of patients.

As shown in the figure, the prosthesis 2 completely wraps the magnesium alloy net-shaped framework 1, the retention nail holes 4 are tightly attached to the bone surface, and the retention nail holes 4 are exposed to facilitate placement of the retention bone nails 5. The outline of the prosthesis 2 is matched with the anatomical form of the alveolar bone, the surface of the prosthesis is smooth and transitionally has no edges and corners, so that the irritation to mucous membrane can be reduced, and the postoperative discomfort of a patient can be reduced.

In summary, the utility model provides an oral bone tissue repair system, which comprises a reticular framework and a repair body coated on the reticular framework, wherein the surface of the repair body is provided with a biological shielding film, and the reticular framework is made of magnesium alloy or pure magnesium. Compared with the prior art, the prefabricated prosthesis shortens the operation time and can better fit the anatomical outline of the defect area; the absorbable magnesium alloy net-shaped framework provides a certain supporting effect for the structure, so that the structure can maintain a stable osteogenic space in a certain time; the reticular framework is absorbable magnesium alloy, and is taken out without secondary operation, so that the pain of a patient is greatly reduced; the absorbable magnesium alloy reticular framework is embedded into the prosthesis, so that the problems of possible membrane exposure and the like caused by abrasion and stimulation to mucous membranes and soft tissues are avoided.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.

Claims

1. The oral bone tissue repair system is characterized by comprising a reticular framework capable of being absorbed by a human body and a prosthesis which is coated on the reticular framework and can be absorbed by the human body, wherein a biological shielding film which is coated on the prosthesis is arranged on the outer surface of the prosthesis.

2. The oral bone tissue repair system according to claim 1 wherein the edge of the mesh skeleton is provided with retention nail holes in which retention bone nails are threaded.

3. The oral bone tissue repair system according to claim 2 wherein there are 1-3 of the fixture holes, each of the fixture holes having the fixture pin disposed therein.

4. The oral bone tissue repair system according to claim 1 wherein the mesh skeleton has a thickness of 0.1-0.5mm.

5. The oral bone tissue repair system according to claim 1 wherein the mesh skeleton is made of an absorbable magnesium alloy.