Novel maintaining implant system for prosthesis of cranio-maxillo facial

Abstract

The invention discloses a novel maintaining implant system for a prosthesis of a cranio-maxillo facial. The novel maintaining implant system comprises an implant, a connector, a base station and an armature; wherein screw threads are arranged outside the implant, and a screw hole is formed in an upper center of the implant; a hole is formed in the center of the connector, a groove is formed in the upper part of the connector, and screw holes are formed in ear blocks on two sides of the groove; a bulge matched with the groove of the connector is arranged in the lower part of the base station, a hole is formed in the bulge, and a screw hole is formed in the upper center of the base station; the armature is of a cylindrical shape, a screw stem is arranged in the lower center, and the screw stem is matched with the screw hole in the upper part of the base station; and the connector is connected with the implant and the base station through screws, and the armature is arranged on the base station through the screw stem. The novel maintaining implant system can be obliquely planted into a bone area with an abundant bone amount in vicinity, thus the planting length of the implant can be increased, the maintenance of the implant is enabled to be more stable, and the dropping of the implant is effectively avoided; meanwhile the problem of insufficient side maintaining force due to parallelism of a magnetic attaching article of each implant for a prosthesis of an ear and a nose can be solved at the same time; and the problems of possible occurrence of inside-calvarium damage and the like caused by planting of maintaining implant of an ear prosthesis are prevented, and long-term stability of the implant is guaranteed.

Description

technical field [0001] The present invention relates to a kind of retaining device used for the repair of craniomaxillofacial defect, especially, the superstructure (connector and abutment) of the retaining device can freely adjust the angle relative to the lower structure (implant) of the retaining device , the retention device can be used for the retention of various prosthetics such as ears, noses and eyes. Background technique [0002] Cranio-maxillofacial defects caused by congenital development, tumors and trauma are common clinical diseases, which bring serious physical and mental harm to patients, and at the same time bring challenges to clinical restoration and reconstruction. Cranio-maxillofacial defects, especially defects in the ear, nose and eyes, will affect the shape and function of the patient's face. Clinical repair methods can be divided into two categories: autologous tissue and allogeneic tissue. The autologous tissue method uses various tissue flaps (s...

AI Technical Summary

Problems solved by technology

There are following disadvantages with implant-retained prosthesis: 1. implant surgery has certain risk

2. Implants may loosen and fall off

3. If the artificial ear is retained by magnetic attachments, because the directions of the implants are roughly parallel, the magnetic attachments are insufficient to resist the lateral force and the artificial ear is easy to slide, but the magnetic attachments can maintain the retention force for 4-8 years It does not disappear; if the prosthetic ear is retained by a bar-type attachment, the bar-type attachment can ensure lateral and axial retention at the same time, but the bar-type may become loose and poorly retained due to the fatigue of the friction material after repeated removal and wear. Its life span is about one year and needs to be replaced periodically

[0008] There are no good solutions for the above-mentioned prosthesis retention problems in the ear, nose, eye and other parts, and there is no good solution in the literature or patents at home and abroad.

Images