Basis cranii-temporo-mandibular joint combination prosthesis

Abstract

The invention discloses a basis cranii-temporo-mandibular joint combination prosthesis, which comprises a basis cranii portion, a zygomatic arch portion, an articular fossa portion, a condylar process head portion and a joint handle, wherein the basis cranii portion, which is in charge of repairing basis cranii defect, is made from a titanium alloy material; a plurality of fixing holes are formed in the edge of the basis cranii portion, so that the basis cranii portion is fixed to temporal bone; the zygomatic arch portion, which is in charge of repairing zygomatic arch defect, is made from a titanium alloy material; a plurality of fixing holes are formed in the front end of the zygomatic arch portion, so that the zygomatic arch portion is fixed to zygomatic arch; the articular fossa portion is an articular surface capable of simulating mandibular movements of a human body, and the articular fossa portion is made from an ultrahigh molecular weight polyethylene material; the basis cranii portion, the zygomatic arch portion and the articular fossa portion are integrally connected; the condylar process head portion, which is made from a cobalt-chrome-molybdenum alloy material, is represented as a hollow cylindrical structure; the joint handle, which is made from a titanium alloy material, is used for repairing partial ascending limbs; a fixing hole is formed in the joint handle; and the condylar process head portion and the joint handle are integrally connected. The best effect can be achieved since different parts are made from different materials; and the individual basis cranii portion, zygomatic arch portion and articular fossa portion as well as the condylar process head portion and the joint handle, which are made from special materials, are integrally connected, so that the prosthesis is more stable and firmer and is better in fixing effect.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a combined skull base-temporomandibular joint prosthesis. Background technique [0002] Skull base space-occupying lesions are relatively hidden, and when discovered, they often cause skull base bone destruction, and even spread to the external condylar head, affecting the structure and function of the temporomandibular joint (TMJ), such as giant cell tumor of the temporal bone , schwannoma, etc.; while the temporomandibular joint fossa is close to the skull base, and the thinnest part is only 3.2 mm apart from the bone. Tumors that originate in the temporomandibular joint may break through the skull base and enter the skull, such as osteochondroma and aggressive synovial cartilage Tumor disease, giant cell tumor of the tendon sheath and other malignant tumors; the two can be described as "closely related". Therefore, in the surgical treatment of neoplastic diseases in the skull b...

AI Technical Summary

Problems solved by technology

The total joint prosthesis of the artificial joint fossa and joint head has been maturely applied, but the artificial prosthesis system of the skull base, joint fossa, joint head and mandible as a whole has not been reported

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