Intshayelelo kwiiStents zamathumbu

I-intestinal stent sisixhobo sonyango, ngokuqhelekileyo isakhiwo se-tubular esenziwe ngetsimbi okanye iplastiki, esetyenziselwa ukuxazulula ukuphazamiseka kwesisu okubangelwa yi-intestinal stenosis okanye i-occlusion. I-stents yamathumbu inokuthi ifakwe phantsi kwe-endoscopy okanye ngemingxuma emincinci elukhumbeni, kwaye ukufakwa kwe-stents kunokwandisa indawo encinci yamathumbu ukubuyisela i-intestinal patency kunye nomsebenzi. Ukufakelwa kwe-stent yamathumbu ingasetyenziselwa ukunyanga izifo ezininzi zamathumbu, ezifana ne-tumor yamathumbu, isifo se-intestinal, isifo somhlaza we-pancreatic, njl. Le ndlela yonyango ineenzuzo ze-non-invasive, ngokukhawuleza, kwaye isebenzayo, enokuphucula umgangatho we ubomi bezigulane kunye nokunciphisa iintlungu zabo kunye neempawu ezingathandekiyo.

I-intestinal stent luhlobo olutsha lwesixhobo sonyango, kwaye ukuphuhliswa kwayo kunokulandwa emva ekupheleni kwee-1970s kunye ne-1980 yokuqala. I-stent yokuqala yamathumbu yayisenziwa ngeplastiki kwaye yayisetyenziselwa ukunyanga izithintelo eziphezulu zesisu ezibangelwa zizilonda ezinobungozi ezifana nomhlaza wommizo kunye nomhlaza wemiphunga. Ngokuphuhliswa kobuchwepheshe bezonyango, i-stents yensimbi isetyenziswe ngokubanzi kunyango lokuphazamiseka kwesisu.

Ngo-1991, i-Food and Drug Administration (i-FDA) yase-United States yavuma i-stent yokuqala yesinyithi yonyango lwe-biliary stricture kunye ne-occlusion. Ukusukela ngoko, ukusetyenziswa kweentsimbi zentsimbi kuye kwanda ngokuthe ngcembe ukunyanga izifo ezahlukeneyo zesisu kunye nokuvala, njengomhlaza wommizo, umhlaza wesisu, umhlaza we-duodenal, umhlaza we-biliary, umhlaza we-pancreatic kunye nomhlaza we-colorectal.

Kwiminyaka yakutshanje, ngenkqubela phambili eqhubekayo yobugcisa bezonyango, uyilo kunye nezixhobo ze-stents zamathumbu nazo ziphuculwe ngakumbi. Uyilo lwee-stents zamathumbu zanamhlanje luhambelana ngakumbi nemigaqo ye-biomechanical, enokuthi ilungelelanise ngcono iimpawu ze-physiological of intestinal kunye nokusombulula iimeko ezinzima ze-pathological. Kwangaxeshanye, ukukhethwa kwemathiriyeli kukwahluke ngakumbi, kubandakanywa intsimbi engatyiwa, i-cobalt chromium alloy, i-titanium ecocekileyo, kunye ne-nickel titanium alloy. Ezi zixhobo zitsha azinayo nje iipropathi ezingcono zoomatshini, kodwa zikwazi ukumelana nomhlwa kwaye zihambelana ne-biocompatible, ezinokunciphisa ukwenzeka kokusabela okubi kunye neengxaki emva kokufakelwa kwe-stent.

Njengendlela yonyango ekhawulezayo nesebenzayo, i-stent isetyenziswe ngokubanzi kwaye idlala indima ebalulekileyo kunyango lwe-intestinal stenosis kunye ne-occlusion. Ngophuhliso oluqhubekayo kunye nokuphuculwa kweteknoloji, kukholelwa ukuba i-stents yamathumbu iya kuba noluhlu olubanzi lwezicelo ezilindelekileyo kwixesha elizayo.