Medicament delivery device
AssigneeShl Medical AG
InventorMattias Daniel
Life of this patent
Estimating the term…
Abstract
A medicament delivery device is presented having a drive configured to act on a medicament container for expelling a medicament; a holder configured to hold said drive in a pre-tensioned state; an activator configured to interact with said holder for releasing said drive from the pre-tensioned state; wherein the device further includes a feedback mechanism configured to interact both with said holder and with said drive for generating an audible and/or tactile and/or visual signal indicating that the medicament has been completely expelled.
Claims20
A drive mechanism for use in a medicament delivery device, the drive mechanism comprising:
- a housing comprising a distal end that is covered and enclosed by an end portion that is axially and rotationally fixed relative to the housing;
- a plunger rod having a longitudinal axis;
- a spring biasing the plunger rod in a proximal direction;
- and
- a holder having a proximal end and axially fixed relative to the housing, wherein the proximal end comprises a cut-out portion projecting proximally from of the holder, and wherein the plunger rod is releasably fixed relative to the holder to maintain the spring in a pre-tensioned state,
- wherein the holder and the cut-out portion are axially fixed relative to the housing during dose delivery.
An automatic medicament delivery device comprising:
- a housing comprising a distal end that is covered and enclosed by an end portion that is axially and rotationally fixed relative to the housing;
- a container holder attached to a proximal end of the housing and axially fixed relative to the housing;
- and
- a hollow plunger rod having a longitudinal axis;
- a spring partially contained with the plunger rod that biases the plunger rod in a proximal direction;
- and
- a holder having a proximal end and that is axially fixed relative to the housing, where the proximal end comprises a cut-out portion projecting proximally from of the holder and where the plunger rod is releasably fixed relative to the holder to maintain the spring in a pre-tensioned state,
- wherein the holder and the cut-out portion are axially fixed relative to the housing during dose delivery.
Dependencies are inferred from the claim text.