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US 6,551,267 B1Granted
Medical article having blood-contacting surface
AssigneeBecton, Dickinson and Company
InventorsRichmond R. Cohen, Preston Keusch
Life of this patent
Estimating the term…
Abstract
A plastic medical article, such as a catheter or blood collection tube, is coated with a crosslinked hydrogel permanently bound to the inside wall of the tube. The hydrophilic surface provided by the hydrogel prevents adherence of blood components to the surface, and the permanent adherence of the hydrogel prevents its removal by blood.
Claims9
A medical article comprising:
- a plastic container comprising:
- a) an open top portion, a closed bottom portion, a side wall extending from said top portion to said bottom portion and having an inner and outer surface;
- and
- b) a hydrogel coating disposed directly on at least a portion of said inner surface, said hydrogel being permanently bound to said surface by irradiation selected from the group consisting of electron beam or gamma so as to be impervious to removal by blood.
1 more element
A blood collection assembly comprising:
- a) an evacuated plastic tube;
- b) a puncturable stopper in said tube;
- and
- c) a crosslinked hydrogel coating on an inside wall surface of said tube, said coating being permanently bound to said surface by irradiation selected from the group consisting of electron beam and gamma.
1 more element
A method to prepare a medical container having a blood contacting surface consisting essentially of:
- a) providing a container comprising an open top portion, a closed bottom portion, a side wall extending from said top portion to said bottom portion and having an inner and outer surface
- b) coating at least a portion of the inner surface of the container with a hydrogel to give a coated surface;
- and
- c) irradiating said coated surface with radiation selected from the group consisting of electron beam or gamma to cause said hydrogel to bind to said inner surface.
1 more element
Dependencies are inferred from the claim text.