US 10,646,658 B2Granted

Injection device

AssigneeHaselmeier AG

InventorJoachim Keitel

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Abstract

An injection device includes: a housing defining a longitudinal axis; an operating element; a metering member held in the housing so as to be rotatable and fixed in the direction of the axis; the operating element, in a first position for setting a quantity to be dispensed, being mounted so as to be rotatable relative to the housing and rotationally fixedly connected to the metering member via a first coupling; the operating element, in a second position for dispensing, being rotationally fixedly connected to the housing via a second coupling and being rotatable in relation to the metering member; a first latching installation acting between operating element and housing, wherein the first latching installation is effective only in the operating element's first position; and, a second latching installation acting between operating element and metering member, wherein the second latching installation is effective only in the operating element's second position.

Claims16

Dependent claims

An injection device comprising:

a housing defining a longitudinal central axis;
an operating element;
a metering member held in said housing so as to be rotatable and fixed in a direction of the longitudinal central axis;
said operating element, in a first position for setting a quantity of injection liquid to be squeezed out, being mounted so as to be rotatable in relation to said housing and being connected in a rotationally fixed manner to said metering member via a first coupling;
said operating element, in a second position for squeezing out the quantity of injection liquid to be squeezed out, being connected in a rotationally fixed manner to said housing by way of a second coupling and being rotatable in relation to said metering member;
a first latching installation configured to act between said operating element and said housing, wherein said first latching installation is effective only in the first position of said operating element when setting the quantity of injection liquid to be squeezed out;
a second latching installation configured to act between said operating element and said metering member, wherein said second latching installation is effective only in the second position of the operating element when squeezing out the quantity of injection liquid to be squeezed out;
and,
a metering piston connected in a rotationally fixed manner to said operating element, where said metering piston is connected to said metering member by way of a first threaded connection.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/942,238Filed 30 Mar 2018 · continuation
Priority: DE 20 2015 006 841 U30 Sep 2015
Published: US 2018/0221588 A19 Aug 2018
Granted: 12 May 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

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
A61M 5/20
Syringes: automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
A61M 5/2033
Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically: spring-loaded one-shot…
A61M 5/31535
Dosing mechanisms, i.e. setting a dose: means improving security or handling thereof, e.g. blocking means, means preventing insufficient dosing,…