Title:
用量設定およびリセット機構を有するペン型薬物注射デバイス
Document Type and Number:
Japanese Patent JP6573613
Kind Code:
B2
Abstract:
A pen type drug injection device includes a housing, a dose dial member, a torsion spring fixed between the housing and the dial member such that energy is accumulated in the torsion spring upon rotation of the dial member relative to the housing, a drive member engaging a lead screw, a first clutch, and a second clutch. The first clutch couples the drive member and the housing, in a coupled state and allows relative rotation between them in a de-coupled state. The second clutch rotationally couples the drive member and the dial member in a coupled state and allows clockwise and anti-clockwise rotation between them in a de-coupled state. The second clutch includes a ratchet clicker with teeth having different tooth angles in the clockwise and the anti-clockwise direction, such that, in the de-coupled state, the teeth override each other with different resistance in opposite directions.
Inventors:
Simon Lewis Bilton
David Aubrey Plumptry
Matthew Jones
Joseph Butler
David Aubrey Plumptry
Matthew Jones
Joseph Butler
Application Number:
JP2016537342A
Publication Date:
September 11, 2019
Filing Date:
September 03, 2014
Export Citation:
Assignee:
SANOFI
International Classes:
A61M5/315; A61M5/31; F16D1/06; F16D41/12; F16H25/20; F16H33/02
Domestic Patent References:
| JP2010503434A | ||||
| JP2012148198A | ||||
| JP2009507581A |
Foreign References:
| US20050055011 |
Attorney, Agent or Firm:
Junji Yuda
Noriyuki Takebayashi
Noriyuki Takebayashi