Importance

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Abstract

This suction needle device is used to transfer liquids such as cytotoxic drugs from a stoppered container to a syringe. This device has a sharpened needle which is conventionally attached to a hub. A housing is adapted and is mounted on the shank of this needle and a tubular sleeve is disposed in a telescope fashion around this shank and one end of the sleeve is secured in this housing. The stopper is disposed to be entered by the sharpened needle and sleeve and provides a seal when so penetrated. A crimping tool provides opposed and longitudinally displaced localized crimps to deform the sleeve to the extent that a positive engagement with the shank of the needle is made. The crimps are limited enough to provide positive securing of the sleeve without bending or otherwise affecting the interior capacity of the needle. The shank of the needle is sealed against exterior air reaching the conduit between the outer diameter of the needle and inner diameter of the sleeve. A hydrophobic filter is mounted in one end of the housing to filter the air within or as it enters the container.

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First Claim