Vacuum actuated blood collection assembly including tube of clot-accelerating plastic
AssigneeBecton, Dickinson and Company
InventorsErwin A. Vogler, Garry R. Harper, Jane C. Graper
Life of this patent
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Abstract
An evacuated blood collection assembly includes a plastic container having a plasma-treated inside wall surface and an open end covered by a puncturable septum. The inside wall surface may also be abraded to increase surface area. The invention included a method to make the assembly.
Claims10
A blood collection assembly comprising a plastic blood collection container having a bottom wall and a side wall defining an open end covered by a puncturable septum, said bottom wall, side wall and septum enclosing an evacuated interior volume of said container, an interior wall surface area of said container being treated with a plasma from a process gas, the plasma-treated wall surface having an accelerated rate of blood clotting in said container relative to the rate in an otherwise identical non-plasma-treated container.
A blood collection assembly comprising a plastic blood collection container having a bottom wall and a side wall defining an open end covered by a puncturable septum, said bottom wall, side wall and septum enclosing an evacuated interior volume of said container, an interior wall surface area of said container being abraded to have a rough surface and treated with a plasma from a process gas, the abraded and plasma-treated wall surface causing an accelerated rate of blood clotting in said container relative to the rate in an otherwise identical non-abraded, non-plasma-treated container.
A method for preparing a plastic blood collection assembly comprising:
- a) exposing an inside wall surface of a plastic container having an open end to a plasma from a process gas to give a plasma-treated inside wall surface;
- b) covering said open end with a puncturable septum;
- and
- c) evacuating the container covered by said septum, said plasma-treated wall surface having an accelerated rate of blood clotting relative to the rate in an otherwise identical non-plasma-treated container.
A method for preparing a plastic blood collection assembly comprising:
- a) abrading an inside wall surface of a plastic container having an open end to give a roughened inside wall surface having a greater surface area than that of said plastic container prior to said abrading;
- b) exposing said roughened inside wall surface to a plasma from a process gas;
- c) covering said open end with a puncturable septum;
- and
- d) evacuating the container covered by said septum.
Dependencies are inferred from the claim text.