Amashethi ezethulo, aziwa nangokuthi amashethi aqondisayo, angamathuluzi ezokwelapha asetshenziswa ezinqubweni ezahlukahlukene ukusiza ukuqondisa nokwethula ezinye izisetshenziswa zezokwelapha noma izisetshenziswa emzimbeni.Ngokuvamile zenziwe ngezinto eziguquguqukayo ezifana ne-polyethylene noma i-polyurethane.Ama-Introducer sheaths avame ukusetshenziswa ku-interventional cardiology, i-radiology, nokuhlinzwa kwemithambo.Asetshenziselwa ukusiza ukufakwa kwama-catheter, izintambo zokuqondisa, noma ezinye izisetshenziswa ngemithambo yegazi noma eminye imigodi yomzimba.Ama-sheaths ahlinzeka ngendlela ebushelelezi yezinsimbi, okuvumela ukufaka kalula futhi okuphephile.Ama-sheaths okwethula afika ngobukhulu obuhlukahlukene kanye nokucushwa ukuze kuhambisane nezinqubo ezihlukahlukene zezokwelapha kanye nezidingo ezithile zesiguli.Ngokuvamile aklanywa nge-dilator ekugcineni ukuze asize ukwandisa umkhumbi noma izicubu ngesikhathi sokufakwa.Kubalulekile ukuqaphela ukuthi ukusetshenziswa kwamashethi e-introducer kuyinqubo yezokwelapha okufanele yenziwe kuphela ochwepheshe bezempilo abaqeqeshiwe.