Patent ID: 8162875

Claim:
A diluent/medication mixing syringe assembly comprising: a syringe body having an open proximal end and a fluid outlet on a distal end; a plunger assembly including a plunger body and a plunger head supported on a distal end of the plunger body, the plunger head slidably and sealingly engaging an inner wall of the syringe body, the plunger head and syringe body defining a reservoir at the distal end of the syringe body; a cannula supported on and extending through the plunger assembly, the cannula defining a longitudinal channel extending through the plunger assembly into the reservoir, the cannula having a proximal end including an adaptor comprising a female luer-type connector configured to releasably engage a supply of fluid; and a sealing member positioned in the longitudinal bore of the plunger body about the cannula formed from a resilient material configured to seal the longitudinal bore upon removal of at least a proximal portion of the cannula from the longitudinal bore, the cannula including a weakened portion facilitating separation of the proximal portion of the cannula from a distal portion of the cannula upon application of a predetermined force on the cannula.