Patent · US Active

Spring-driven drug delivery device

US10596328B2 · kind B2 · utility

1Cited by

3References

10Claims

0Family size

Assignee

Novo Nordisk A/S · DK

Inventors

Christian Plambech · Ramme, DK
Jesper Peter Windum · Maribo, DK

Key dates

Filing date	Dec 22, 2015
Grant date	Mar 24, 2020
Priority date	—
Expiry date	Jan 22, 2037

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61M2005/3125
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The present invention relates to a drug delivery device (100) comprising a housing (101), a threaded piston rod (102), a rotatable drive tube (103), a drive nut (104) in threaded engagement with the piston rod (102) and being rotationally locked but axially moveable relative to the drive tube (103), and a support member (105) arranged rotationally free on the piston rod (102), the support member (105) being axially locked relative to the housing (101) and arranged to allow the drive tube (103) to move axially. The device further comprises a compression drive spring (106) arranged between the piston rod (102) and the drive tube (103), the compression drive spring (106) being arranged axially between the drive nut (104) and the support member (105).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.