Claims for Patent: 9,132,239

Summary for Patent: 9,132,239

Title:	Dial-down mechanism for wind-up pen
Abstract:	The present invention relates to a dial-down mechanism for an injection device comprising a torsion spring for assisting injection of a dose of medicament from the injection device, the dial-down mechanism comprising a ratchet arm (21) engaging a ring element (10) and a reset element (30) which acts on a knob located on the periphery of the ratchet arm (21) to move the ratchet arm (21) out of engagement with the ring element (10) in order to allow the set dose to be reduced.
Inventor(s):	Moller; Claus Schmidt (Fredensborg, DK), Markussen; Tom Hede (Bagsv.ae butted.rd, DK), Radmer; Bo (Hillerod, DK), Enggaard; Christian Peter (Vejby, DK)
Assignee:	Novo Nordisk A/S (Bagsvaerd, DK)
Application Number:	13/124,995
Patent Litigation and PTAB cases:	See patent lawsuits and PTAB cases for patent 9,132,239
Patent Claims:	1. A dial-down mechanism for an injection device comprising a torsion spring which is strained when setting a dose by rotating a dose setting member (20) relatively to a housing in a first direction, and unstrained when rotating the dose setting member (20) in a second direction opposite the first direction, the torsion spring for storing energy to expel a dose from the injection device, the dial-down mechanism comprising: a fixation element (10) coupled to the housing and having a plurality of inwardly pointing teeth (12), at least one ratchet arm (21) coupled to the dose setting member (20), wherein the at least one ratchet arm (21) engages the teeth (12) of the fixation element (10) and is shaped such that the dose setting member (20) is prevented from rotating in the second direction when the ratchet arm (21) engages the teeth (12) of the fixation element (10), the dial-down mechanism further comprises a reset member (30) configured for movement in a first direction and a second direction opposite the first direction, such that rotation of the reset member (30) in the first direction to set a dose is transformed directly to the dose setting member (20) and thereby rotates relatively to the fixation element (10), and rotation of the reset member (30) in the second direction activates the ratchet arm (21) to disengage the fixation element (10) and thereby allow the dose setting member (20) to rotate in the second direction by carrying at least one forward extending reset element (32) located distally to the reset member (30) and which acts on at least one part (25) of the ratchet arm to move the ratchet arm (21) out of engagement with the teeth (12) of the fixation element (10) thereby dialing down the set dose, wherein the reset member (30) is at least partially provided inside the dose setting tube (20) and axially retained by the dose setting member (20), and the ratchet arm (21) carries at least part (25) extending radially from the at least one ratchet arm (21) and having an outer radius from the centre axis of the injection device larger than the outer radius of the remaining part of the ratchet arm (21). 2. A dial-down mechanism according to claim 1, characterized in that, the reset element (32) travels along a constant radius from the centre axis of the injection device when rotated. 3. A dial-down mechanism according to claim 1, characterized in that, the ratchet arm (21) is provided with a steep surface (24) engaging a steep surface (13) of the teeth (12) of the fixation element (10).

Details for Patent 9,132,239

Applicant	Tradename	Biologic Ingredient	Dosage Form	BLA	Approval Date	Patent No.	Expiredate
Novo Nordisk Inc.	LEVEMIR	insulin detemir	Injection	021536	June 16, 2005		2029-10-21
Novo Nordisk Inc.	LEVEMIR	insulin detemir	Injection	021536	October 31, 2013		2029-10-21
Novo Nordisk Inc.	NOVOLOG MIX 50/50	insulin aspart protamine and insulin aspart	Injectable Suspension	021810	August 26, 2008		2029-10-21
Seqirus Inc.	FLUAD	influenza vaccine, adjuvanted	Injection	125510	November 24, 2015		2029-10-21
Seqirus Inc.	FLUAD,FLUAD QUADRIVALENT	influenza vaccine, adjuvanted	Injection	125510	February 21, 2020		2029-10-21
Novo Nordisk Inc.	RYZODEG 70/30	insulin degludec and insulin aspart	Injection	203313	September 25, 2015		2029-10-21
Novo Nordisk Inc.	TRESIBA	insulin degludec	Injection	203314	September 25, 2015		2029-10-21

International Patent Family for US Patent 9,132,239

Country	Patent Number	Estimated Expiration
World Intellectual Property Organization (WIPO)	2010046394
United States of America	2012095410
Russian Federation	2506957
Russian Federation	2011118236
Poland	2373361
Japan	5558477
Japan	2012506273