EP 3463517 A1 20190410 - ACCURATE DOSE CONTROL MECHANISMS AND DRUG DELIVERY SYRINGES
Title (en)
ACCURATE DOSE CONTROL MECHANISMS AND DRUG DELIVERY SYRINGES
Title (de)
GENAUE DOSISSTEUERMECHANISMEN UND SPRITZEN ZUR WIRKSTOFFFREISETZUNG
Title (fr)
MÉCANISMES PRÉCIS DE CONTRÔLE DE DOSE ET SERINGUES D'ADMINISTRATION DE MÉDICAMENT
Publication
Application
Priority
US 2016033950 W 20160524
Abstract (en)
[origin: CA3026708A1] A dose control mechanism (510, 610) for a syringe includes an engaging screw thread arrangement between an exterior surface of a plunger (514, 614) and a longitudinally extending channel (520D, 620D) of a housing (520, 620). The engaging screw thread arrangement includes at least one thread segment (514B, 614B) and a pitch guide (520C, 620C) including a variable pitch thread. At least a portion of the longitudinally extending channel (520D, 620D) of the housing (520, 620) including one of the pitch guide (520C, 620C) and the at least one thread segment (514B, 614B), and the plunger (514, 614) includes the other of the pitch guide (520C, 620C) and the at least one thread segment (514B, 614B). The plunger (514, 614) resides at least partially within the housing (520, 620) with the at least one thread segment (514B, 614B) engaged with the pitch guide (520C, 620C). An accurate dose drug delivery syringe (500, 600) includes such a dose control mechanism (510, 610), a barrel (540, 640), a plunger seal (536, 636), and a barrel adapter assembly (450) having a barrel tip (452) and a needle (454). The syringe (500, 600) may be a fill-at-time-of-use syringe, a pre-filled syringe, or a safety syringe having integrated needle retraction or needle sheathing safety features, or a combination thereof. Methods of assembly, manufacturing, and operation are similarly disclosed.
IPC 8 full level
A61M 5/315 (2006.01)
CPC (source: EP KR US)
A61M 5/28 (2013.01 - EP KR); A61M 5/31526 (2013.01 - KR US); A61M 5/31528 (2013.01 - EP KR); A61M 5/3157 (2013.01 - KR); A61M 5/31575 (2013.01 - EP KR); A61M 5/3158 (2013.01 - KR); A61M 5/31585 (2013.01 - EP KR); A61M 5/3157 (2013.01 - EP); A61M 5/3158 (2013.01 - EP); A61M 2005/3139 (2013.01 - EP KR); A61M 2005/3152 (2013.01 - EP KR); A61M 2205/581 (2013.01 - EP KR); A61M 2205/582 (2013.01 - EP KR); Y10T 29/49826 (2015.01 - EP)
Citation (search report)
See references of WO 2017204787A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
AU 2016408375 A1 20190103; BR 112018074108 A2 20190306; CA 3026708 A1 20171130; CN 109641107 A 20190416; EP 3463517 A1 20190410; JP 2019519289 A 20190711; KR 20190013854 A 20190211; MX 2018014363 A 20190411; SG 11201810368P A 20181228
DOCDB simple family (application)
AU 2016408375 A 20160524; BR 112018074108 A 20160524; CA 3026708 A 20160524; CN 201680087733 A 20160524; EP 16730091 A 20160524; JP 2018561627 A 20160524; KR 20187036888 A 20160524; MX 2018014363 A 20160524; SG 11201810368P A 20160524