Patent ID: 8283320

Claim:
A medical device for preparing a haemostatic paste, consisting of: i) a containment unit defining a first internal volume and being comprised of a material impermeable to a fluid, wherein the containment unit further comprises an opening to an external environment and a closure-unit for closing the opening, wherein the opening is re-closable with the at least one closure-unit, and ii) a sterile haemostatic agent in powder form contained in said containment unit and having a second volume of less than 90% of the first internal volume of the containment unit; wherein said sterile haemostatic agent is capable of forming a putty-like paste in the presence of a third volume of liquid; and iii) an outer packaging defining a sterile barrier seal enclosing said containment unit; wherein the remaining volume of at least 10% of the internal volume is a void volume allowing for the addition of a third volume of liquid from an external environment to the sterile haemostatic agent in powder form through the opening and mixing of the sterile haemostatic agent in powder form and the added liquid within the containment unit without present exposure to an environment external to that of the containment unit.