A kind of delivery device for being suitable for the dosage set by discharge, including：Dosing mechanism, bias spring and the control device of output mechanism with driving spring, band the first and second dosage settings ratchet part.Control device is suitable for making the second ratchet part be rotated in a first direction with thus setting dosage when being rotated in a first direction dose, and makes ratchet part is axially mobile to be engaged to depart from mutual when rotating in mutually opposite directions dose.When the first and second ratchet parts axially depart from, driving spring is by the second ratchet part is rotated in a second direction thus to reduce set dosage, bias spring makes ratchet part axially be moved into re-engaging with each other, and this causes set dosage to correspond to a tooth of ratchet mechanism and reduce.Mevcut buluş genellikle, kullanıcı tarafından ayarlanabilen bir ilaç dozunu bir kartuştan çıkarmak için uyarlanan ilaç iletim cihazlarına ilişkindir. Spesifik bir açıdan buluş, kurmalı tipte yay tahrikli bir cihaza ilişkindir.
