Back to results
US 5,326,535 AGranted
Tube having unitary blood coagulation activator and method for its preparation
AssigneeBecton, Dickinson and Company
InventorsErwin A. Vogler, Jane C. Graper, Garry R. Harper
Life of this patent
Estimating the term…
Abstract
A blood collection container is coated on its inside wall with a unitarily immobilized clotting activator. The activator may be applied to the surface by an adhesive or by rendering the inside wall surface sticky with a solvent and partially absorbing the activator into the sticky surface.
Claims8
A blood collection assembly comprising:
- a) a plastic container having a bottom wall providing a closed end and a side wall defining an open end, said side wall and bottom wall together defining an inside wall surface, at least a portion of said inside wall surface having unitarily affixed thereto particles of a blood clotting activator;
- and
- b) a puncturable septum over said open end, said particles being partially embedded in the plastic inside wall surface.
A method for preparing a plastic blood collection assembly comprising the steps of:
- a) contacting an inside wall surface of a plastic tube having an open end and a closed end with a solvent which causes said inside wall surface to become sticky;
- b) unitarily adhering particles of a blood clotting activator to the sticky inside wall surface, said particles being partially embedded in the plastic inside wall surface;
- c) evaporating the solvent on said inside wall surface and on said particles;
- and
- d) covering said open end with a puncturable septum.
2 more elements
A blood collection assembly produced by a process including the steps of:
- a) contacting an inside wall surface of a plastic tube having an open end and a closed end with a solvent which causes said inside wall surface to become sticky;
- b) unitarily adhering particles of a blood clotting activator to the sticky inside wall surface, said particles being partially embedded in the plastic inside wall surface;
- c) evaporating the solvent on said inside wall surface and on said particles;
- and
- d) covering said open end with a puncturable septum.
2 more elements
Dependencies are inferred from the claim text.