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US 7,252,856 B2Granted
Blood gas syringe having improved blood barrier
AssigneeBecton, Dickinson and Company
InventorsRichmond R. Cohen, Preston Keusch
Life of this patent
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Abstract
A process for fabricating a water-swellable porous plastic plug is provided, the process including the steps of: providing a porous substrate having a plurality of passageways therethrough, disposing into the passageways a hydrophilic polymer, irradiating the substrate to induce cross-linking of the hydrophilic polymer, such that the polymer forms a hydrogel coating on the walls of the passageways.
Claims5
A process for fabricating a porous plug, comprising the steps of
- providing a porous substrate comprising a plurality of passageways therethrough,
- disposing into the passageways a hydrophilic polymer,
- subsequent to the disposing step, irradiating the substrate and the hydrophilic polymer, to induce cross-linking of the hydrophilic polymer, such that the polymer forms a hydrogel coating on the walls of the passageways, wherein the hydrogel coating swells upon contact with water.
Dependencies are inferred from the claim text.