Nubwo PTFE (polytetrafluoroethylene) naePTFE.
Imiterere yimiti nibintu byibanze
PTFE na ePTFE byombi biva muri monomers ya tetrafluoroethylene, kandi byombi bifite formulaire ya chimique (CF₂-CF₂) ₙ, idafite imiti myinshi kandi idashobora kwihanganira ubushyuhe bwinshi. PTFE ikorwa nubushyuhe bwo hejuru bwo hejuru, kandi iminyururu ya molekile itunganijwe neza kugirango ibe imiterere yuzuye, idahwitse. ePTFE ikoresha uburyo bwihariye bwo kurambura kugirango PTFE ihindurwe mubushyuhe bwo hejuru kugirango ikore imiterere meshi ifite icyuma cya 70% -90%.
Kugereranya ibintu bifatika
| Ibiranga | PTFE | ePTFE |
| Ubucucike | Hejuru (2.1-2.3 g / cm³) | Hasi (0.1-1.5 g / cm³) |
| Uruhushya | Nta gucengera (byuzuye) | Umuyoboro mwinshi (micropores yemerera ikwirakwizwa rya gaze) |
| Guhinduka | Ugereranije birakomeye kandi byoroshye | Ihinduka ryinshi kandi ryoroshye |
| Imbaraga za mashini | Imbaraga zo gukomeretsa cyane, irwanya amarira make | Byarushijeho kunoza amarira |
| Ubwoba | Nta byobo | Ububabare bushobora kugera kuri 70% -90% |
Ibiranga imikorere
●PTFE: Ifite imiti kandi irwanya aside ikomeye, alkalis ikomeye hamwe n’umuti ukomoka ku buhinzi-mwimerere, ifite ubushyuhe buri hagati ya -200 ° C kugeza kuri + 260 ° C, kandi ifite dielectric ihoraho cyane (hafi 2.0), bigatuma ikwirakwizwa n’umuvuduko ukabije w’umuzunguruko.
● ePTFE: Imiterere ya microporome irashobora kugera kubintu bidafite amazi kandi bihumeka (nk'ihame rya Gore-Tex), kandi bikoreshwa cyane mubuvuzi (nk'imitsi y'amaraso). Imiterere isukuye irakwiriye gufunga gasketi (kwisubiraho nyuma yo kwikuramo kugirango wuzuze icyuho).
Ibisabwa bisanzwe
● PTFE: Bikwiranye nubushyuhe bwo hejuru bwubushyuhe bwo hejuru, gutwara amavuta yo kwisiga, imiyoboro ya chimique, hamwe na reaction ya reaktori-isukuye cyane mu nganda zikoresha amashanyarazi.
● ePTFE: Mu murima wa kabili, ikoreshwa nk'urwego rwo kubika insinga z'itumanaho ryihuta cyane, mu rwego rw'ubuvuzi, rukoreshwa mu miyoboro y'amaraso ya artile na suture, no mu nganda, ikoreshwa mu gucana amavuta ya selile ya proton hamwe n'ibikoresho byo kuyungurura ikirere.
PTFE na ePTFE buriwese afite ibyiza bye. PTFE ikwiranye n'ubushyuhe bwinshi, umuvuduko mwinshi, hamwe na chimique yangiza ibidukikije bitewe nubushyuhe bwayo bukabije, imiti irwanya imiti, hamwe na coefficient de fraisse nkeya; ePTFE, hamwe nubworoherane bwayo, ubwikorezi bwikirere, hamwe na biocompatibilité yazanywe na microporome yayo, ikora neza mubikorwa byubuvuzi, kuyungurura, hamwe ninganda zifunga kashe. Guhitamo ibikoresho bigomba kugenwa hashingiwe kubikenewe muburyo bwihariye bwo gusaba.
Ni ubuhe buryo bukoreshwa muri ePTFE mu rwego rw'ubuvuzi?
ePTFE (yaguye polytetrafluoroethylene)ikoreshwa cyane mubijyanye nubuvuzi, bitewe ahanini nuburyo bwihariye bwa microporome, biocompatibilité, idafite uburozi, idakangurira kandi idafite kanseri. Ibikurikira nuburyo bukoreshwa byingenzi:
1. Umwanya wumutima
Imiyoboro yamaraso yubukorikori: ePTFE nikintu gikoreshwa cyane mubukorikori bwimitsi yamaraso, bingana na 60%. Imiterere ya microporome ituma ingirabuzimafatizo z'umubiri n'imitsi y'amaraso bikura muri yo, bigakora ihuriro ryegereye ingirabuzimafatizo, bityo bikazamura umuvuduko wo gukira no kuramba kw'imitsi y'amaraso.
Umutima wumutima: ukoreshwa mugusana ingirangingo z'umutima, nka pericardium. umutima wa ePTFE urashobora kwirinda gufatana hagati yumutima nuduce twinyuma, bikagabanya ibyago byo kubagwa kabiri.
Imitsi y'amaraso: ePTFE irashobora gukoreshwa mugukora igifuniko cyimitsi iva mumitsi, kandi biocompatibilité nziza hamwe nubukanishi bifasha kugabanya uburibwe na trombose.
2. Kubaga plastique
Gushyira mu maso: ePTFE irashobora gukoreshwa mugukora ibikoresho bya pulasitiki byo mumaso, nka rhinoplasti hamwe nuzuza mumaso. Imiterere ya microporome ifasha gukura kwimitsi no kugabanya kwangwa.
Gutera amagufwa: Mu rwego rwamagufwa, ePTFE irashobora gukoreshwa mugukora insimburangingo, kandi irwanya kwambara neza hamwe na biocompatibilité ifasha kongera ubuzima bwa serivisi bwatewe.
3. Ibindi bikorwa
Ibibyimba bya Hernia: Ibishishwa bya Hernia bikozwe muri ePTFE birashobora gukumira neza indwara ya hernia, kandi imiterere yacyo ifasha guhuza ingirangingo.
Ubuvuzi bwubuvuzi: suture ya ePTFE ifite imiterere ihindagurika nimbaraga zikomeye, zishobora kugabanya ingirabuzimafatizo nyuma yo kubagwa.
Indangagaciro z'umutima: ePTFE irashobora gukoreshwa mugukora indangagaciro z'umutima, kandi igihe kirekire hamwe na biocompatibilité bifasha kongera ubuzima bwa serivisi ya valve.
4. Ibikoresho byo kwa muganga
ePTFE irashobora kandi gukoreshwa mugutwikira ibikoresho byubuvuzi, nka catheters nibikoresho byo kubaga. Coefficient nkeya yo guterana hamwe na biocompatibilité ifasha kugabanya kwangirika kwinyama mugihe cyo kubagwa
Igihe cyo kohereza: Apr-27-2025