Head maxillofacial bone implant and method for quickly molding same

Abstract

The invention relates to a head maxillofacial bone implant and a method for quickly molding the same. The method is particularly a processing method for prosthesis for defects of the facial bones of human bodies, and the prosthesis is obtained by the aid of a processing technology for quickly polymerizing and molding powder. The method includes constructing maxillofacial post-traumatic models of patients according to image data of the bones of the patients; manufacturing three-dimensional models according to treatment repair requirements of clinical doctors by means of symmetric mirroring, curve design, database matching and the like. The image data of the bones of the patients are acquired by the aid of image diagnostic techniques such as CT (computed tomography) or MRI (magnetic resonance imaging). The three-dimensional models are matched with the traumatic positions of the patients. The head maxillofacial bone implant and the method have the advantages that the prosthesis models can be molded by the aid of the processing method for quickly molding the implant, and accordingly the prosthesis can be manufactured; the prosthesis which is processed in a personalized manner can be designed and processed for the patients with the maxillofacial defects and particularly patients with complicated defect structures, and the prosthesis with an anatomical repair effect and an effect of recovering functions of the maxillofacial organs of the patients can be manufactured.

Description

technical field [0001] The invention relates to the field of bone repair implants, in particular to a craniomaxillofacial bone implant used for craniofacial bone repair and a rapid prototyping method thereof. Background technique [0002] For bone repair implants, there is a skull implant in Patent Document 1 of a utility model in China, which specifically includes a skull prosthesis. The outer surface of the skull prosthesis is coated with a tantalum coating, that is, it is made of , Corrosion-resistant, wear-resistant, and metal tantalum with high bonding strength with the substrate is used as the coating material. [0003] In the whole skull, orbital wall fractures and bone defects are an important part, and they are also a common clinical disease in ophthalmology. The causes are often comminuted fractures caused by ocular trauma and traffic accidents, or after orbital tumor surgical resection. resulting in bone defects. Of course, craniofacial bone fractures and bone d...

AI Technical Summary

Problems solved by technology

During the operation, the surgeon needs to process the prefabricated material on-site, such as bending, shaping, trimming, wound comparison, and re-trimming, when facing the wound of cranio-maxillofacial bone defect, which not only prolongs the exposure time of the wound , which increases the stimulation and damage to the wound soft tissue during the material shaping comparison process, and also increases the chance of infection during wound surgery, which may lead to damage such as prolonging the postoperative soft tissue repair time

At the same time, due to the difference in manual comparison and shaping, it is difficult to meet the requirements of perfect anatomical reduction, which limits the recovery of facial and orbital functions after surgery.

[0007] In addition, the discrepancy between the shape of the prefabricated material and the actual needs brings great troubles and postoperative complications to the operation, such as Figure 7 is shown in the CT tomogram

The fracture of the inner orbital wall of the patient caused the contents of the frame to protrude into the nasal cavity. Hydroxyapatite bone plate was used for filling (pointed by the arrow). Because the thickness of the bone plate did not match the space to be filled, the surgeon placed 2 layers of bone plate It is used to raise the orbital wall to achieve the purpose of supporting the eyeball. On the one hand, the anatomical reduction is not perfect, and on the other hand, whether the postoperative multi-layer bone plate will be displaced due to the movement of the patient are all factors that lead to the failure of the operation.

[0008] When it comes to craniofacial bone implants and their rapid prototyping methods, there are currently no existing technologies and patent documents

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