US 9,283,325 B2Granted

Medicament delivery device with dose re-setting

AssigneeSHL Group AB

InventorAnders Karlsson

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Abstract

The present invention relates to a medicament delivery device comprising a housing (10,12), capable of containing a medicament container (14), a plunger rod (18) and a drive member (34) arranged to said plunger rod and capable of acting on said plunger rod (18) for moving it in the proximal direction of the device for expelling a dose of medicament from said medicament container (14), a dose and drive setting mechanism (52) comprising a dose setting member (56) operably connected to a force member (82) such that setting of a dose causes said force member (82) to be energized. The intermediate member (68) is configured to interact with a dose setting sleeve (50) through a first unidirectional connection (64, 62), configured to interact with said drive member (34) through a second unidirectional connection (70, 72), and configured to interact with a dose drive sleeve (76) through a third connection (74,78).

Claims20

Dependent claims

A medicament delivery device, comprising:

a housing configured to accommodate a medicament container;
a plunger rod;
a drive member configured to interact with the plunger rod for moving the plunger rod in a proximal direction for expelling a dose of medicament from the medicament container;
and
a dose and drive setting mechanism, comprising:
a dose setting assembly operably connected to a force member such that setting a dose energizes the force member, wherein the dose setting assembly comprises a dose setting member, a dose setting sleeve fixedly connected to the dose setting member, and a dose drive sleeve coaxially arranged on the dose setting sleeve and operably connected to the force member;
and
an intermediate member configured to interact with the dose setting assembly and the drive member for setting and re-setting a dose, wherein the intermediate member is configured to interact with the dose setting sleeve through a first unidirectional direct connection, is configured to interact with the drive member through a second unidirectional direct connection, and is configured to interact with the dose drive sleeve through a third direct connection.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/116,841Filed 3 May 2012 · us provisional application
Priority: SE 115042712 May 2011
Published: US 2014/0088515 A127 Mar 2014
Granted: 15 Mar 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

A61M 5/31583
Constructional features; Drive mechanisms or modes for piston rods: the piston rod being moved by the rotational movement of a component directly…
A61M 5/20
Syringes: automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
A61M 5/31535
Dosing mechanisms, i.e. setting a dose: means improving security or handling thereof, e.g. blocking means, means preventing insufficient dosing,…
A61M 5/31553
By rotational movement of dose setting member, e.g. during setting or filling of a syringe: without axial movement of dose setting member