A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
128/127
A61M 25/00 (2006.01) A61M 25/06 (2006.01) A61M 39/14 (2006.01)
Patent
CA 2039390
PATENT Abstract of the Disclosure An improved intravenous catheter is disclosed which, when properly positioned within a vein, provides a closed system cath- eter. The closed system intravenous catheter comprises a cath- eter having a tapered portion, a hub portion and a fluid-flow passageway extending therethrough. A fluid-impermeable elasto- meric gasket member is disposed within the hub portion of the catheter for sealing the hub portion and the fluid-flow passage- way of the catheter. A skin-penetrating stylet of a stylet assembly extends through the elastomeric gasket member and the fluid-flow passageway of the catheter so that a puncture tip on a proximal end of the skin-penetrating stylet extends outwardly from the tapered portion of the catheter. As air-permeable, liquid-impermeable vent assembly is connected to an observation chamber of the stylet assembly so that blood flow into a flash- point cavity defined by the observation chamber can be observed and controlled. The vent also permits auxiliary equipment to be connected without leakage of blood. A retractable sheath for the skin-penetrating stylet is also provided which covers the skin- penetrating stylet when same is removed from the catheter so as to minimize exposure of health care workers to the potentially contaminated puncture tip of the skin-penetrating stylet.
M.d. Knutson Richard A.
Parker Robert L.
Kent & Edgar
M.d. Knutson Richard A.
Parker Robert L.
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