Combined type full-organic polymer material artificial temporal-mandibular joint

Abstract

The invention provides a combined type full-organic polymer material artificial temporal-mandibular joint which comprises a temporal bone support fixed bone fracture plate made of polyether-ether-ketone (PEEK) or a derivative thereof, a condyle process head and a fixed bone fracture plate thereof which are made of PEEK or a derivative thereof, and a temporal bone lining made of ultra-high molecular weight polyethylene (UHMWPE), wherein the temporal bone support fixed bone fracture plate is matched with the upper part of the temporal bone lining, the lower part of the temporal bone lining is in a concave U-shaped sphere and is connected with the condyle process head and the fixed bone fracture plate thereof, the condyle process head has a buffer effect for the sliding face of the temporal bone lining, the temporal bone support fixed bone fracture plate can generate final motion on the fixed face of the temporal bone lining, and the temporal bone support fixed bone fracture plate and the temporal bone lining are matched with each other. According to the invention, the major parts of all the implanted parts are made of high polymer material, so that the problems of allergy and toxicity caused by metal and the corrosion thereof are solved; the elasticity modulus of PEEK is matched with that of the natural bone, so that the problem of stress shielding is solved; PEEK is in final motion match with the sliding surface and the fixed face of UHMWPE, so that the wear problem is greatly reduced; and meanwhile, enhancing and developing parts are added, so that the practicability is further improved.

Description

technical field [0001] The invention relates to a medical implant, in particular to a combined all-organic polymer material artificial temporomandibular joint. Background technique [0002] The temporomandibular joint is a complex joint composed of hinged and sliding movements (SaderR, LeiggenerC, SaldamliB, JürgensP, LandesC, ZeilhoferHF: O.635AnewinnovativesolutionfortotalTMJreplacement.JCraniomaxillofacSurg36(Suppl.1(0)):S159,2008), And it can open and close up to 2000 times per day (Guarda-Nardini L, Manfredini D, Ferronato G: Temporomandibular joint total replacement prosthesis: current knowledge and considerations for the future. Int J Oral Maxillofac Surg 37(2): 103e110, 2008). According to epidemiological studies, disorders caused by temporomandibular joints account for as much as 20 to 25% of the population, but only a small number of patients receive treatment (SolbergWK, WooMW, HoustonJB: Prevalenceofmandibulardysfunctioninyoungadults.JAmDentAssoc98(1): 25e34, 197...

AI Technical Summary

Problems solved by technology

However, the current temporomandibular joint replacement system, even in the short term, does not have a good clinical effect, accompanied by high failure rates, such as allergies to materials, etc. (RamosA, MesnardM.JLoadtransferin TMJinalloplastictotaljointreplacementfortwodifferentmouthpertures.CraniomaxillofacSurg.2014Oct;42(7):1442-9.doi:10.1016 / j.jcms.2014.04.008.Epub2014May2)

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