Sanofi

Roche Diagnostics Operations, Inc.

Wolfgang Pelzer

Stefan Bayer

Björn Wilden

Philippe Blank

Daniel Berning

Michael Pfoser

Philipp Zeitz

Stefan Riebel

Dieter Meinecke

Wouter Reubzaet

The present invention relates to a drive mechanism of a drug delivery device for setting and dispensing of a dose of a medicament, the drive mechanism comprising: a housing, a piston rod to operably engage with a piston of a cartridge to displace the piston in a distal direction, a rotatable member arranged on an axially extending axis of rotation in the housing, said rotatable member being rotatable in a dose incrementing direction against an action of a spring element and being operably engageable with the piston rod during the dispensing of the dose, and a clutch element comprising at least one radially displaceable clutch element to engage with a rim of the rotatable member with a variably adjustable strength.

Drive mechanism for a drug delivery device

The present invention relates to a drive mechanism of a drug delivery device for setting and dispensing of a dose of a medicament, the mechanism comprising: a housing (), a piston rod () to operably engage with a piston () of a cartridge () to displace the piston () in a distal direction (), a rotatable member () arranged on an axially extending axis of rotation () in the housing (), said rotatable member () being rotatable in a dose incrementing direction () against the action of a spring element () and being operably engageable with the piston rod () during dose dispensing, a clutch member () comprising at least one radially displaceable clutch element () to engage with a rim () of the rotatable member () with variably adjustable strength.

A dose indicating mechanism for a drug delivery device for displaying of a dose of a medicament to be dispensed by the drug delivery device includes an elongated housing extending in an axial direction and having at least a first window and a second window that are spaced apart from each other in axial direction. The dose indicating mechanism further includes a dose indicating sleeve movably disposed in the housing and having at least one dose indication coinciding with the first window to display the size of a dose actually set, and an indicator operably engaged with the dose indicating sleeve and axially displaceable relative to the housing to coincide with the second window for indicating an operational status of the dose indicating mechanism.

Dose indicating mechanism for a drug delivery device

This disclosure relates to a drive mechanism for a drug delivery device and to a respective drug delivery device. The drive mechanism includes an elongated housing extending in an axial direction, an actuation member rotatably supported on the housing for setting of the dose. The drive mechanism further includes a last dose sleeve directly rotatably engaged with the actuation member and having at least one stop and a last dose member threadedly engaged with the last dose sleeve. The last dose member is further rotatably fixed to the housing and is operable to engage with the at least one stop to limit a rotation of the last dose sleeve.

A drive mechanism of a drug delivery device for setting and dispensing of a dose of a medicament includes a housing, a piston rod, a dose indicating member with a dose size information thereon, and a drive wheel. The piston rod engages with a piston of a cartridge for displacing the piston in a distal direction. The dose indicating member is connected to a spring element and is rotatable in a dose incrementing direction against the action of the spring element for setting a dose. The drive wheel is operably engaged with the piston rod for displacing the piston rod in the distal direction for dose dispensing. The dose indicating member is engageable with the drive wheel during dose dispensing to transfer a force to the drive wheel when driven by the relaxing spring element in a dose decrementing direction.

Drive mechanism of a drug delivery device

A drive mechanism of a drug delivery device for dispensing of a dose of a medicament, includes an elongated housing extending in an axial direction, a piston rod to operably engage with a piston of a cartridge to displace the piston in axial distal direction, a drive sleeve rotatably supported in the housing at least in a dose incrementing direction against the action of a spring element, and a ratchet mechanism to rotatably fix the drive sleeve relative to the housing. A first ratchet body has a first and a second ratchet element to alternately engage with a toothed profile of a second ratchet body. One of the first and second ratchet bodies is operably engaged with the housing and wherein the other one of the first and second ratchet bodies is operably engaged with the drive sleeve.

A drug delivery device for dispensing of a dose of a medicament includes an elongated body extending in an axial direction, a cartridge holder to accommodate a cartridge at least partially filled with the medicament and having an axially displaceable piston, and a piston rod to operably engage with the piston of the cartridge to displace the piston in axial distal direction. The drug delivery device further includes a coupling member connected with the cartridge holder and being axially displaceably arranged in the body for retracting the cartridge holder into the body during setting of a dose.

Drug delivery device

A drive mechanism of a drug delivery device for dispensing of a dose of a medicament includes a housing extending in an axial direction, and a piston rod to operably engage with a piston of a cartridge to displace the piston in an axial distal direction. The drive mechanism further includes a last dose sleeve rotatably supported in the housing and being selectively engageable with a dose setting mechanism for setting of a dose, and a last dose member threadedly engaged to the housing, rotatably locked to the last dose sleeve and axially displaceable relative to the last dose sleeve.

The present invention relates to a drive mechanism of a drug delivery device for dispensing of a dose of a medicament, the mechanism comprising: &#x2014;a housing (), &#x2014;a piston rod () extending in an axial direction () to operably engage with a piston () of a cartridge (), &#x2014;a drive sleeve () rotatably supported in the housing (), at least partially enclosing the piston rod (), the drive sleeve () is operably releasable from the piston rod () for setting of a dose and the drive sleeve () is operably engageable with the piston rod () for dispensing of the dose, &#x2014;a dose limiting member () threadedly engaged with the drive sleeve (), rotatably locked to the housing () and being displaceable in axial direction () in response to a rotation of the drive sleeve () relative to the piston rod (), &#x2014;at least one stop member () provided on the piston rod () to engage with the dose limiting member () for impeding a further displacement of the drive sleeve () relative to the piston rod (), when a maximum dose configuration has been reached.

Hand-held drug injection device and dose setting limiter mechanism therefor

A drug delivery device for setting and dispensing of a dose of a medicament includes a housing extending in an axial direction and a piston rod to operably engage with a piston of a cartridge to displace the piston in a distal axial direction. The drug delivery device further includes a drive spindle operably engageable with the piston rod during dose dispensing and a drive member axially displaceable relative to the drive spindle against the action of a spring element during dose setting and being threadedly engaged with the drive spindle to form a spindle gear.

Automatic drug injection device with sophisticated drive mechanism

The present invention relates to a drive mechanism of a drug delivery device for dispensing of a dose of a medicament, the mechanism comprising: an elongated housing () extending in an axial direction (), a piston rod () to operably engage with a piston () of a cartridge () to displace the piston () in axial distal direction (), a dose setting member () rotatably arranged at a proximal end of the housing () for setting of a dose, a base member () having a proximally extending shaft portion () at least partially enclosed by the dose setting member (), a last dose limiting member () radially disposed between the dose setting member () and the base member () and having at least one radial stop () to limit a rotational displacement of the dose setting member () relative to the base member (), wherein the last dose limiting member () is rotatably locked but axially displaceable to one of the base member () and the dose setting member () and wherein the last dose limiting member () is threadedly engaged with the other one of the base member () and the dose setting member ().

A drive mechanism of a drug delivery device for dispensing of a dose of a medicament includes a housing extending in an axial direction, a piston rod to operably engage with a piston of a cartridge to displace the piston in an axial distal direction, and a drive sleeve extending in the axial direction and being rotatable in a dose incrementing direction against the action of a spring enclosing at least an axial portion of the drive sleeve. The drive mechanism further includes a dose limiting member threadedly engaged with the drive sleeve, rotatably locked to the housing and at least partially extending radially between the drive sleeve and the spring, and at least one stop located on at least one of dose limiting member and drive sleeve for limiting an axial displacement of the dose limiting member relative to the drive sleeve.

The present invention relates to a drive mechanism for a drug delivery device for dispensing of a dose of a medicament, and to a respective drug delivery device, wherein the drive mechanism comprises: an elongated housing () extending in an axial direction (), a piston rod () to operably engage with a piston () of a cartridge () to displace the piston () in axial distal direction (), a drive wheel () axially fixed to the housing (), engaged with the piston rod () and rotatable relative to the housing () for driving the piston rod () in distal direction (), a drive sleeve () axially displaceable relative to the drive wheel () to rotatably engage with the drive wheel () in a distal dose dispensing position and to disengage from the drive wheel () in a proximal dose setting position, wherein the drive sleeve () is rotatably secured to the housing () in the proximal dose setting position by means of a ratchet member ().

A drug delivery device for dispensing of a dose of a medicament includes a housing extending in an axial direction and a piston rod to operably engage with a piston of a cartridge to displace the piston in an axial distal direction. The drug delivery device includes a dose indicating mechanism including a first spool and a second spool rotatably supported in the housing and a dose indicating tape coiled onto at least the second spool and fixed with an end to an outer circumference of the first spool. The first and second spools are oriented substantially parallel to each other and substantially parallel to the piston rod.

The present invention relates to a drive mechanism for a drug delivery device for dispensing of a dose of a medicament, and to a respective drug delivery device, wherein the drive mechanism comprises: &#x2014;an elongated housing () extending in an axial direction (), &#x2014;a piston rod () to operably engage with a piston () of a cartridge () to displace the piston () in axial distal direction (), &#x2014;a drive sleeve () extending in axial direction () and being rotatably supported in the housing (), &#x2014;a dose setting member () rotatably supported on a side wall portion () of the housing () and being rotatable with respect to an axis () extending in radial direction (r), &#x2014;wherein the drive sleeve () is operably releasable from the piston rod () and rotatably engageable with the dose setting member () for setting of the dose.

Growing community of inventors

Kreuzau, Germany

Wolfgang Pelzer