Iimveliso zePolyurethane: Ubuvulindlela boBuchule bezoNyango ngeMpahla ephawulekayo

Ngokuhambela phambili ngokukhawuleza kwetekhnoloji yezonyango, izixhobo zokusebenza eziphezulu zithathe indima ebalulekileyo kwicandelo lezempilo lanamhlanje.Kulo mhlaba uguqukayo, iimveliso ze-polyurethane ngokuthe ngcembe zivela njengomdlali obalaseleyo, zifaka amandla amatsha kubuchule obutsha bezonyango ngokusebenza kwazo okubalaseleyo kunye nezicelo ezahlukeneyo.Ukusuka ekomelezeni intuthuzelo kunye nokhuseleko ukuya ekwenzeni uyilo lobuqu, iimveliso ze-polyurethane zibumba ngokuthe ngcembe ikamva lokhathalelo lwempilo, zibonelela abaguli ngamava onyango aphuculweyo.

Uluhlu olumangalisayo lwezicelo zeemveliso ze-polyurethane kwicandelo lezonyango luyamangalisa ngokwenene.Nokuba zisebenza njenge-elastomers, iingubo, okanye iinxalenye zamalungu okwenziwa, iimveliso ze-polyurethane ziqhuba izinto ezintsha kummandla wezonyango.Kwizixhobo zonyango, ukuqina kwazo okuchukumisayo kunye nokuthamba zibonelela ngenkxaso engcono kunye nentuthuzelo kwizinto ezinje ngoomatrasi, izihlalo, kunye neprosthetics, ukunceda ukunciphisa ukungonwabi ngexesha lokusetyenziswa ixesha elide.Kwindawo yezitho ezenziweyo, ukusetyenziswa kweemveliso ze-polyurethane kukhululeka kwizithintelo zezinto zemveli, kunika amathuba amakhulu kuyilo lwezixhobo zonyango ezifana ne-stents yentliziyo kunye ne-vascular scaffolds.Oku, kwandisa i-biocompatibility kunye nokunciphisa umngcipheko wokulahlwa.

Ukuthuthuzela kunye nokhuseleko zizinto ezixhalabisayo kwindawo yonyango.Iimveliso zePolyurethane zidlala indima ebalulekileyo ekuphakamiseni amava okhathalelo lwesigulana ngeempawu zabo ezizodwa.I-elastomers ezithambileyo kunye nee-antimicrobial coatings aziphuculi nje kuphela ukukhululeka kwezinto ezinjengezihlalo kunye noomatrasi kodwa zikwaqinisekisa ukhuseleko olucocekileyo lwemeko yezonyango.Xa uqulunqa izixhobo zonyango kunye nezixhobo, ukunyanzeliswa kokugqoka kunye nokuqina kweekhemikhali zeemveliso ze-polyurethane ziqinisekisa ukuzinza kwexesha elide, ukubonelela ngesiseko esithembekileyo sokuxhaswa kwezonyango.

Umkhwa wokwenza ngokwezifiso uphuhliso olubalulekileyo kukhathalelo lwempilo lwangoku.Isebenzisa amandla ayo okusebenza kunye nokuguquguquka kwayo, iimveliso zepolyurethane zibonelela ngenkxaso eyomeleleyo yokwenziwa ngokwezifiso kwezixhobo zonyango.Uyilo lokubumba oluchanekileyo kunye nobuchule bokucubungula buvumela ukulungiswa kwezixhobo zonyango kunye neprosthetics ukuhlangabezana neemfuno ezithile zesigulane ngasinye, ngaloo ndlela kuphuculwe iziphumo zonyango kunye namava omsebenzisi.

Ukujonga phambili, amathemba emveliso ye-polyurethane kwicandelo lezonyango athembisa ngokungathandabuzekiyo.Ngenkqubela phambili eqhubekayo kubuchwepheshe, sinokubona izinto ezintsha ezintsha kwicandelo lezonyango ezibalelwa kwiimveliso zepolyurethane.Ukusuka kumalungu okwenziwa ahambele phambili ukuya kwizixhobo zonyango ezikrelekrele, ukusetyenziswa kweemveliso zepolyurethane kunokuzisa uphuhliso olutsha.Iimveliso zePolyurethane ziya kuqhubeka ziqhubela phambili kwindlela entsha yonyango, igalelo kwinkqubela phambili eqhubekayo kunye nokuguqulwa kwezempilo.

Ukuqukumbela, njengamandla aqhuba ukuveliswa kwezinto ezintsha kwicandelo lezonyango, iimveliso ze-polyurethane zihlengahlengisa ubume bobuchwephesha bezonyango.Nokuba ngokuphucula amava ezigulana okanye ukuqhubela phambili ukuvela kwezixhobo zonyango, iimveliso ze-polyurethane zifaka amandla amatsha kwishishini lezempilo.Ikamva lokhathalelo lwempilo ngokwenene lizele lisithembiso njengoko iimveliso ze-polyurethane ziqhubeka nokudlala indima ebalulekileyo ekuqhubeleni phambili isayensi yezonyango kunye nokhathalelo.