Izizathu zokusebenzisa izinduku ze-titanium ze-ASTM F136 GR5 (Ti-6Al-4V ELI) ekufakweni kwamathambo omuntu

Izizathu zokusebenzisa izinduku ze-titanium ze-ASTM F136 GR5 (Ti-6Al-4V ELI) ekufakweni kwamathambo omzimba womuntu

I-Baoji Dongint Metal Materials Co., Ltd. igxile e-Baoji, esifundazweni sase-Shaanxi, eyaziwa ngokuthi "i-China Titanium Valley". Ngokusebenzisa izinzuzo zendawo zochungechunge oluphelele lwezimboni ze-titanium, inkampani igxile ocwaningweni, ukukhiqizwa kanye nokunikezwa kwezinto zensimbi ze-titanium nezingxubevange ze-titanium ezisezingeni eliphezulu. Umkhiqizo wayo oyinhloko i-ASTM F136 Gr5 (Ti-6Al-4V ELI) izinti zezokwelapha ze-titanium, ehlinzeka ngezixazululo zezinto zokusetshenziswa zezokwelapha ze-titanium eziqinile nezihambisana nezimfuneko kubakhiqizi bemishini yezokwelapha basekhaya nakwamanye amazwe.

Izinduku ze-titanium ze-ASTM F136 GR5 ziyindinganiso ethile yokufakelwa kokuhlinzwa eyenziwe nge-alloy ye-titanium ye-Ti-6Al-4V ELI, ehambisana ne-TC4-ELI yase-China. Zinezinto ezingaphakathi ezingaphezu kwezinga eliphansi kakhulu (umoya-mpilo, i-nitrogen, i-carbon, i-iron), futhi ziyizinto eziyinhloko ezisetshenziswa kakhulu ekufakweni kwensimbi emzimbeni wamathambo, izikulufu, izipikili zomgudu wamathambo, amalunga okwenziwa, kanye nezikweletu zamathambo. Uma kuqhathaniswa ne-GR5 evamile, i-titanium emsulwa, ama-alloy e-cobalt-chromium, nensimbi engagqwali, zinezinzuzo ezibanzi.

Umehluko: Izinduku ze-titanium ezivamile ze-GR5 zilandela indinganiso ye-ASTM B348; izinduku ze-titanium zezokwelapha kumele zibe yi-ASTM F136 GR5, ngokunciphisa ngokuqinile izinto ezingcolile ezingaphakathi, ezifanele umzimba womuntu.

I-elastic modulus iphansi kakhulu kune-stainless steel nama-cobalt-chromium alloys

I-elastic modulus ye-TC4-ELI icishe ibe ngu-110 GPa; ithambo lomuntu elingaphandle (cortical bone) licishe libe ngu-10-30 GPa; i-316L stainless steel ≈ 200 GPa, i-cobalt-chromium ≈ 230 GPa.

Uma i-modulus iphansi, umphumela wokunciphisa ukucindezeleka (stress shielding) uba mncane:

Izinto zokufakelwa ezinobulukhuni obuphezulu kakhulu zizothwala umthwalo omningi, futhi ithambo ngeke lithole ukukhuthazwa kwamandla, okuholela ekuncipheni kwethambo (bone resorption), ukubuna kwethambo (bone atrophy), nokuxega kwento yokufakelwa. Izinduku ze-titanium ze-ASTM F136 GR5 zine-modulus eseduze nethambo, zinciphisa kakhulu ukuncipha kokucindezeleka.

Amandla anele, ukuqina, nokumelana nokukhathala

Izinto zokufakelwa emathanjeni kufanele zimelane nemijikelezo yomthwalo ephindaphindwayo yomzimba womuntu (ukuhamba, ukunyakaza), zinamandla aphezulu okudonsa nokuvumela, ukuqina okuhle ekuphukeni, ukumelana nokukhathala okuhle kakhulu, futhi izikulufu namapuleti okulungisa athwala amandla isikhathi eside mancane amathuba okuthi aphuke.

Izinduku ze-titanium ze-ASTM F136 GR5 zithuthukise ukuqina futhi zehlisa izingozi zokuphuka okungazelelwe, ikakhulukazi zifanele ukwelashwa kwamathambo okulimala.

2. Ukuhambisana okuhle kakhulu nomzimba

Ibusisi le-titanium lakha ngokuzenzakalelayo ifilimu elincane elingangenwa umoya i-TiO₂: alikwazi ukugqwala, uketshezi lomzimba womuntu (ama-chloride ion, amaprotheni) akulimazi kalula noma akuncibilikisi, kukhishwa ama-ion ensimbi ambalwa kakhulu, futhi akuvamisile ukudala ukuvuvukala, ukwenqaba, noma ukungezwani nomzimba.

Ingakwazi ukufeza ukuhlanganiswa kwamathambo: amathambo angakhula ngqo phezu kwendawo ye-titanium alloy, kutholakale ukuxhumana okuqinile phakathi kwethambo nokufakelwayo, into i-stainless steel engakwazi ukuyenza.

Qaphela: Nakuba i-aluminium ne-vanadium zikhona ku-alloy, ifilimu elincane elingangenwa umoya liyazivimbela, futhi inani elikhishwayo liphansi kakhulu lapho kufakwa ngokujwayelekile; i-ELI ilawula ukungcola futhi inciphisa izingozi.

3. Ukubaluleka kwezinga le-ASTM F136 GR5 titanium rod, kungani kungasetshenziswa i-GR5 ejwayelekile

Izinduku ze-titanium ezijwayelekile ze-GR5 (ASTM B348) zinomkhawulo ophezulu wokuqukethwe kwe-oxygen;

Izinduku ze-titanium ze-ASTM F136 GR5 ziphoqelela ukunciphisa izinto ezingena phakathi ze-O, N, C, Fe:

Umoya-mpilo oweqile uzokwenza i-alloy ibe buthakathaka futhi inciphise ukuqina, futhi ngemva kokufakwa ngaphansi kwengcindezi, ijwayele ukuba nemifantu emincane nokuphuka;

Izimfuneko eziqinile zokwakheka, ukungcola, nokutholwa kwemiphumela, zisusa izimbotshana zangaphakathi nokufakwa kwezinto, ziqinisekisa ukuphepha kwento yokufakelwa.

Izidingo zomthetho nezokwelashwa zokufakelwa kwezinto zokwelapha kufanele zihambisane ne-ASTM F136, futhi akukwazi ukusetshenziswa ngqo izinto ze-TC4 zezimboni ukucubungula izinto zokufakelwa.

4. Ukucubungula nokuhambisana nomtholampilo

Ingakhandwa, igingqwe, yenziwe kalula izinduku, amapuleti, izikulufu, namapuleti okulungisa; ingaphinde iphrintwe nge-3D ukuze yenze amathambo amaningi emgodini we-prosthesis.

Ingenza i-anodic oxidation, ukuguqulwa kwengaphezulu, okukhuthaza ukukhula kwamathambo ngaphakathi;

Ayinamandla kazibuthe, ayishisi ngesikhathi sokuhlolwa kwe-MRI, ayisuki, futhi ukuhlolwa kwangemva kokuhlinzwa akukhawulelwe; izinsimbi ze-stainless steel ziyaphazamisa i-MRI.

5. Ukuqhathanisa kokushoda kwezinye izinto zokufakelwa (ukuqonda ukuthi kungani ikhethiwe)

I-316L stainless steel: ishibhile, kodwa inemodulus ephakeme kakhulu, ukucindezela okunamandla kokusinda, ikhipha ama-ion ensimbi, iphazamise i-MRI, futhi manje ishintshwa kancane kancane i-titanium;

I-alloy ye-cobalt-chromium: inamandla amakhulu kakhulu, kodwa inemodulus ephakeme nesisindo esikhulu. Isetshenziswa kakhulu emakhanda amathambo okuhlangana futhi ayifanele izikulufu zamapuleti amathambo okulimala;

I-titanium emsulwa (Gr2 ASTM F67 titanium rod): Inokuhambisana okuhle kakhulu nezicubu zomzimba, kodwa amandla ayo aphansi uma kuqhathaniswa. Ingasetshenziswa kuphela ezintweni ezincane ezifakelwayo futhi ayikwazi ukumelana nomthwalo onzima wamathambo;

I-ASTM F136 GR5 titanium rod: Ilinganisela amandla, ukuqina, i-modulus ephansi, ukuhlanganiswa kwamathambo, nokumelana nokugqwala. Inokulinganisela okuphelele kakhulu ngakho iba i-alloy ye-titanium ekhethwayo ezicelweni zokufakelwa kwamathambo ezithwala umthwalo.

Ukulinganiselwa kwe-ASTM F136 GR5 titanium rod (ukwengeza ngokweqiniso)

I-modulus isengaphezulu kunelethambo lomuntu, futhi inganciphisa kuphela ukucindezeleka kodwa ayikwazi ukuqeda ngokuphelele ukususwa kokucindezeleka; Isakhiwo se-porous esiphrintiwe nge-3D senzelwe ukunciphisa i-modulus elinganayo;

I-alloy iqukethe i-aluminium ne-vanadium, futhi izokhipha imikhondo emincane lapho igqokwa kakhulu, futhi ukuphepha kwesikhathi eside emzimbeni sekuhlolwe ngokomtholampilo ukuthi kuthembekile amashumi eminyaka;

Ukuqina akuphakeme kakhulu, futhi ukusebenza kokungqubuzana nokugqoka akukuhle, okwenza kungafaneleki ezingxenyeni ezihlangana zamalunga. Izindawo ezihlangana zamalunga ngokuvamile zenziwe nge-cobalt-chromium noma nge-ceramics.

Isifinyezo ngomusho owodwa

I-ASTM F136 GR5 titanium rod incike ekugqameni okuphansi kakhulu ukuze ilethe ukuqina okuphezulu, i-modulus elinganiselayo ukunciphisa ukucindezeleka kokuvikela, ukumelana nokugqwala okuhle kakhulu kanye nekhono lokuhlanganisa amathambo, ukuhambisana ne-MRI, kanye nenhlanganisela elinganiselayo yezakhiwo zemishini nezemvelo. Iyona alloy ye-titanium ekhethwayo yokulungisa amathambo omzimba omthwalo. Izinduku ze-GR5 titanium zezimboni azinakho ukulawulwa kokungcola njengezinduku ze-ASTM F136 GR5 titanium futhi kuvinjelwe ngokuqinile ukuthi zisetshenziswe ngqo ekufakweni emzimbeni.