Patent ID: 8469923
Filing Date: 2013-06-25
Classification: A61M,B65B

Abstract:
1. A cartridge for holding and mixing a medical product comprising: a tubular body having a cylindrical wall with first and second opposing ends, said wall having inner and outer surfaces, said inner surface having a generally constant cross-section extending from said second end and along at least a drug mixing area; a first stopper slidably disposed within said wall between said first and second ends, said first stopper defining a liquid-tight seal with said inner surface and having a front end; a second stopper slidably disposed within said wall between said first stopper and said first end, said second stopper defining a liquid-tight seal with said inner surface; a flexible insert disposed at or in proximity to said second end, said insert forming a liquid-tight seal with said wall, said insert having a recess formed therein being complementarily sized and shaped to at least partially nestingly receive said front end of said first stopper; and, a retainer fixed to said outer surface of said wall at said second end, said retainer having an opening therein for providing access to said insert for piercing by a medical needle, wherein, said insert extends into said retainer and forms a liquid-tight seal across said opening.