Nyob rau niaj hnub no niaj hnub no niaj hnub iteration nyob rau hauv kev kho mob technology, muaj ib yam khoom uas, ua tsaug rau nws zoo tag nrho cov kev ua tau zoo, tau dhau los nrhiav heev-tom qab hauv orthopedics, kho hniav, phais yas, thiab lwm yam. Cov khoom ntawd yog kev kho mob titanium alloy. Raws li tus neeg sawv cev zoo tshaj plaws ntawm cov khoom siv tshuaj biomedical, nws tau tsiv tawm ntawm chav kuaj mus rau kev siv tshuaj kho mob, ntsiag to tiv thaiv tib neeg kev noj qab haus huv thiab coj kev cia siab rau kev rov qab los rau cov neeg mob suav tsis txheeb. Niaj hnub no, cia peb tham txog qhov no 'cov khoom siv hnub qub' hauv kev kho mob.
Cov ntaub ntawv biomedical yog lub hauv paus tseem ceeb ntawm kev kho mob, suav nrog hlau, polymers, ceramics, thiab lwm yam. Ntawm lawv, cov khoom siv hlau kho mob tau siv dav hauv cov khoom siv rau orthopedics, daim ntawv thov plawv, thiab lwm qhov chaw vim lawv cov khoom zoo heev. Yog vim li cas titanium alloy sawv tawm ntawm ntau cov ntaub ntawv thiab dhau los ua 'kev xaiv saum toj kawg nkaus' hauv cov ntaub ntawv kho mob hlau yog nyob rau hauv nws cov khoom ntawm ntau yam 'hardcore zoo', zoo kawg nkaus ua tau raws li ntau yam kev cai rau tib neeg cog.
Ua ntej, nws muaj qhov tshwj xeeb biocompatibility, ua rau nws yog 'tus phooj ywg tus khub' rau tib neeg lub cev. Qhov thib ob, nws cov khoom siv kho tshuab yog qhov tsim nyog, zoo haum rau cov yam ntxwv ntawm tib neeg cov pob txha. Tsis tas li ntawd, nws muaj kev tiv thaiv corrosion zoo heev, ua kom ntev - lub sijhawm ruaj khov hauv lub cev. Lwm qhov txiaj ntsig zoo yog tias nws yog qhov hnyav thiab nqa tau yooj yim, txo qhov hnyav ntawm lub cev. Qhov ceev ntawm cov titanium alloy raug tsuas yog 57% ntawm cov hlau tsis muaj steel, yog li tom qab cog, nws tsis ntxiv load rau lub cev, tso cai rau cov neeg mob txav tau yooj yim dua tom qab kev phais thiab kev txhim kho kev rov zoo.
Tau kawg, kev txhim kho ntawm kev kho mob titanium alloy tsis tshwm sim thaum hmo ntuj tab sis tau dhau mus dhau 400 xyoo ntawm kev tshawb nrhiav, tshwj xeeb tshaj yog ze li xya caum xyoo ntawm kev siv thev naus laus zis, los tsim cov txheej txheem niaj hnub no. Nws txoj kev loj hlob tau dhau los ntawm peb theem tseem ceeb: los ntawm 1950 txog 1980, lub hauv paus era ntawm ntshiab titanium thiab Ti-6Al-4V titanium alloy; txij xyoo 1980 txog rau xyoo 1990, lub sijhawm hloov kho dua tshiab ntawm thib ob- tiam txhim kho titanium alloys; thiab txij xyoo 1990 txog rau tam sim no, lub sijhawm tshiab ntawm beta titanium alloys. Thaum ntxov xyoo 1990, Ti13Nb13Zr beta titanium alloy tau qhia, sib txuas cov biocompatibility zoo dua nrog qis dua elastic modulus, qhib ib tshooj tshiab hauv kev txhim kho thiab kev siv siab -kev ua haujlwm biomedical beta titanium alloys. Nws tau muab ntau cov kev xaiv zoo tshaj plaws rau kev kho mob thiab txhawb kev nce qib ntawm kev kho mob titanium alloy thev naus laus zis ntawm kev ua haujlwm siab thiab kev tsim kho tshiab.
Hauv kev lag luam ntawm cov cuab yeej phais, titanium alloys ua rau kev kho mob zoo dua. Titanium cov cuab yeej kho mob muaj zog tiv thaiv corrosion, thiab rov ua kom huv thiab ua kom tsis muaj menyuam tsis cuam tshuam rau lawv qhov zoo; lawv cov khoom tsis yog-sib nqus hlau nplaum pab kom tsis txhob muaj kev puas tsuaj rau cov cuab yeej cog lus siab heev; thiab lawv lub teeb kom zoo dua txo qhov hnyav ntawm cov twj paj nruag, ua rau nws yooj yim dua rau cov kws kho mob ua haujlwm thiab txo qis kev ua haujlwm qaug zog. Niaj hnub no, ntau yam twj paj nruag, xws li scalpels, hemostatic clamps, thiab hluav taws xob pob txha xyaum, tau txais tag nrho cov titanium alloys.
