EP 0918555 A2 19990602 - INCREMENTING MECHANISM IN PARTICULAR FOR USE WITH A MEMBRAL SYRINGE
Title (en)
INCREMENTING MECHANISM IN PARTICULAR FOR USE WITH A MEMBRAL SYRINGE
Title (de)
INKREMENTIERUNGSMECHANISMUS, INSBESONDERE ZUM GEBRAUCH MIT EINER MEDIZINISCHEN SPRITZE
Title (fr)
MECANISME INCREMENTIEL DESTINE EN PARTICULIER A UNE SERINGUE A MEMBRANE
Publication
Application
Priority
- GB 9600446 W 19960228
- GB 9503969 A 19950228
Abstract (en)
[origin: WO9626754A2] A mechanism for accurate dispensing of pre-set quantities of medicament from a syringe has a plunger (17) rotatable within a housing (13), which plunger (17) has a cam surface (19) engaged by a fixed follower (22) such that rotation of the plunger (17) moves the plunger away from the synringe. Internally within the plunger there is a number of parallel racks (40) each of which in turn comes into engagement with a first toothed wheel (47) on rotation of the plunger. The first toothed wheel (47) is connected to a second toothed wheel (48) which runs on a fixed rack (49) extending within the plunger parallel to the axis thereof. The first toothed wheel (47) is coupled to a thrust rod (44) for the piston (12) of the syringe. After pre-setting a required dose by rotation of the plunger (17), the plunger is then pushed towards the synringe, so rotating the first and second toothed wheels (47 and 48). This drives the thrust rod (44) into the syringe but by appropriate selection of the toothed wheel diameters and the tooth pitch thereof, an advantageous velocity ratio between the plunger and thrust rod movements may be obtained.
IPC 1-7
IPC 8 full level
A61M 5/315 (2006.01); A61M 5/24 (2006.01)
CPC (source: EP)
A61M 5/31551 (2013.01); A61M 5/3158 (2013.01); A61M 5/24 (2013.01); A61M 5/31535 (2013.01); A61M 5/31541 (2013.01); A61M 5/31556 (2013.01); A61M 5/31558 (2013.01); A61M 5/31575 (2013.01); A61M 5/31593 (2013.01); A61M 2005/3152 (2013.01)
Citation (search report)
See references of WO 9626754A2
Designated contracting state (EPC)
DE DK ES FR GB IT NL SE
DOCDB simple family (publication)
WO 9626754 A2 19960906; WO 9626754 A3 19961017; EP 0918555 A2 19990602; GB 9503969 D0 19950419
DOCDB simple family (application)
GB 9600446 W 19960228; EP 96904187 A 19960228; GB 9503969 A 19950228