Sisitemu yo guhumeka anesthesia igizwe nigikonoshwa, umurongo wa kalibrasi, umupira werekana, kunyerera, umuyoboro wa telesikopi, kuruma nibindi bikoresho byingenzi.Igikonoshwa cya D gikozwe muri polystirene, telesikopi ya telesikopi, kuruma, umupira werekana hamwe nigitambambuga cyimuka ukoresheje polyethylene nkibikoresho fatizo.