US RE50,442 E1
Injection device
Anders Karlsson, Saltsjii-Boo (SE); and Stephan Olson, Danderyd (SE)
Assigned to SHL Medical AG, Zug (CH)
Appl. No. 18/237,540
Filed by SHL MEDICAL AG, Zug (CH)
PCT Filed Jun. 7, 2012, PCT No. PCT/SE2012/050615
§ 371(c)(1), (2), (4) Date Dec. 17, 2013,
PCT Pub. No. WO2012/173554, PCT Pub. Date Dec. 20, 2012.
Application 18/237,540 is a continuation of application No. 17/973,304, filed on Dec. 20, 2022.
Application 17/973,304 is a continuation of application No. 17/876,872, filed on Jul. 29, 2022.
Application 17/876,872 is a reissue of application No. 14/126,971, filed on Jun. 7, 2012, granted, now 9,132,236, issued on Sep. 15, 2015.
Application 17/876,872 is a reissue of application No. 16/712,648, filed on Dec. 12, 2019, granted, now RE49197, issued on Sep. 6, 2022.
Application 14/126,971 is a reissue of application No. 14/126,971, filed on Jun. 7, 2012, granted, now 9,132,236, issued on Sep. 15, 2015.
Application 18/237,540 is a reissue of application No. 14/126,971, filed on Jun. 7, 2012, granted, now 9,132,236, issued on Sep. 15, 2015.
Claims priority of provisional application 61/498,542, filed on Jun. 18, 2011.
Claims priority of application No. 1150554-2 (SE), filed on Jun. 17, 2011.
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 5/20 (2006.01); A61M 5/315 (2006.01); A61M 5/32 (2006.01)
CPC A61M 5/2033 (2013.01) [A61M 5/20 (2013.01); A61M 5/315 (2013.01); A61M 5/31585 (2013.01); A61M 5/32 (2013.01); A61M 2205/583 (2013.01)] 1 Claim
OG exemplary drawing
 
[ 20. An injection device, comprising:
a housing comprising an opening located at a distal end surface of the housing;
a container holder arranged within the housing and configured for accommodating a medicament container having a needle attached to an end of the medicament container and a stopper sealingly and slidably arranged inside the medicament container at the other end of the medicament container;
a drive unit, comprising:
a plunger rod comprising a threaded outer surface and a terminal proximal end;
a spinner axially fixed to the terminal proximal end such that the plunger rod will rotate relative to the spinner when an injection is performed;
a plunger drive mechanism rotationally locked to the plunger rod such that rotation of the plunger drive mechanism relative to the housing causes axial displacement of the plunger rod in a proximal direction, where the plunger drive mechanism has a locked state and an unlocked state;
a first energy accumulating member arranged in an interior of the housing and configured to accumulate and store energy, wherein the first energy accumulating member is operatively connected to the plunger drive mechanism, and wherein when the plunger drive mechanism is in the unlocked state an output torque from the first energy accumulating member rotates the plunger drive mechanism such that the plunger rod is axially moved toward a proximal end of the injection device, whereby the injection is performed; and
a rotary injection indication mechanism that indicates injection progress through the opening, where the rotary injection indication mechanism comprises a signaling member visible to a user through the opening and configured as a rotating wheel and an indication drive mechanism for rotationally driving the rotating wheel, the indication drive mechanism being operatively coupled to the plunger drive mechanism at a distal end of the plunger drive mechanism such that rotation of the plunger drive mechanism causes rotation of the signaling member, and wherein the rotating wheel comprises an indication element for indicating the injection device is ready for a medicament injection, the medicament injection is in progress, and the medicament injection has come to an end, where rotation of the indication element is provided on a surface of the rotating wheel, and the at least one indication element is provided on a surface of the signaling member that is perpendicular to a longitudinal axis of the injection device. ]