Amasirinji Alahlwayo Ezokwelapha anezakhiwo kanye nesakhiwo: Lo mkhiqizo wenziwe ngomgqomo, i-plunger, ipiston kanye nenaliti. Lo mgqomo kufanele uhlanzeke futhi ube sobala ngokwanele ukuze ubonwe kalula. Umgqomo nepiston kufanelana kahle futhi inendawo enhle yokushelela, futhi kulula ukuyisebenzisa. Umgqomo osobala kulula ukukwazi kahle i-volumn futhi umgqomo obala futhi kulula ukusula ibhamuza. I-plunger ihanjiswa kahle ngaphakathi komgqomo.
Umkhiqizo uyasebenza ukusunduza ikhambi emthanjeni wegazi noma we-subcutaneous, futhi ungakhipha igazi emzimbeni womuntu emithanjeni. Ifanela abasebenzisi beminyaka ehlukene futhi iyindlela eyisisekelo yokumnika.