GRIFFITHS, STEVEN M.,HILL, ROBERT L.,WILMOT, JOHN G.
申请号：
CA2542204
公开号：
CA2542204C
申请日:
2004.10.21
申请国别(地区):
CA
年份:
2015
代理人:
摘要：
An automatic medicament injector having a compartment for a dry medicamentcomponent and a compartment for a wet medicament component. The twocompartments are separated by a seal structure that has a plug that is movedfrom a sealing position into a mixing position when the device is activated.The seal structure includes a wiper that scrapes the interior walls in the drycomponent compartment to prevent the dry component from accumulating at theseal/glass interface. A tapered insert "funnels" the mixed medicamentcomponents to an attached needle assembly, but can be removed when the deviceis filled. A filter is provided between the medicament compartments and theneedle assembly. A chamber between the filter and the needle assembly allowsfor better flow through the filter. An actuation assembly drives the plug intothe mixing position and forces the mixed medicament through the needle andinto the user.
