Disposable Hydrophilic Txheej Latex Indwelling Catheter
Cov khoom lag luam no yog lub npe hu ua "Pisposable hydrophilic txheej latex catheter",
uas siv cov latex catheter ua cov khoom siv raw, thiab tom qab ntawd nws tau hloov kho nrog peb txheej txheej txheej.
Sab hauv txheej txheej yog txheej hydrophobic, uas yog nruj nreem khi rau cov latex substrate thiab yog li tiv thaiv kev tso tawm ntawm cov protein.
Qhov no overcomes lub ntsiab drawback ntawm latex siv raws li raw cov ntaub ntawv rau catheter manufacture, thiab ua rau lub catheter muaj kev ruaj ntseg nrog zoo biocompatible.
Cov txheej txheem nruab nrab yog tsim los hloov cov txheej txheej hauv hydrophobic mus rau hauv qhov chaw hydrophilic, thiab yog li cov txheej txheem super hydrophilic sab nrauv (plasma plasma PVP) tuaj yeem khov kho.
Qhov zoo ntawm peb cov khoom
I.Super lubricity
Tau txais txiaj ntsig rau super hydrophilic txheej txheej ntawm peb cov catheters, qhov sib txhuam coefficient ntawm cov catheters raug txo kom tsawg dua 5.0 feem pua ntawm tus nqi ntawm cov catheters zoo tib yam. Ntxiv mus, lub super lubrication tuaj yeem yooj yim thiab sai tau los ntawm dipping / leaching lub catheter hauv dej hauv 3 thib ob.
II.Super stability
Qhov kev ruaj ntseg ntawm no txheej peb-txheej yog zoo heev. Nws tseem nyob ruaj khov tom qab lub catheter yog dipped nyob rau hauv cov zis tsawg kawg yog 60 hnub, los yog tom qab lub catheter yog indwelled nyob rau hauv cov neeg mob lub urethrae rau tsawg kawg yog 30 hnub.
III.Biocompatibility
Super hydrophilic txheej txheej yog muab rho tawm los ntawm kev kho mob plasma PVP, uas yog hydrophilic heev thiab super lubricate. Cov khoom siv PVP yog bio-phooj ywg yam tsis muaj cytotoxicity. Ntxiv mus, Co-60 irradiation yog siv rau kev ua kom tsis muaj menyuam tsis yog epoxy. Yog li tsis muaj epoxy residues thiab tsis muaj cytotoxicity tau kuaj pom, uas ua rau peb cov khoom zoo tshaj lwm yam khoom zoo sib xws.
IV.Suppression ntawm nto crystallization. Lub crystallization nyob rau saum npoo ntawm catheters tau zoo suppressed, thiab tsis muaj crystallization tau kuaj pom los ntawm indwelling lub catheter nyob rau hauv lub urethrae ntawm cov neeg mob lub cev rau ntau tshaj 30- hnub. Thaum lub crystallization tau kuaj pom nyob rau hauv 7-hnub indwelling nyob rau hauv lub urethra ntawm cov neeg mob lub cev rau catheters zoo tib yam. Kev tiv thaiv ntawm qhov chaw crystallization zoo heev txo qis kev puas tsuaj / kab mob ntawm cov urethral mucosae.
