초록 ▼

A pre-slit injection site (34) includes a housing (40) with a flow path therethrough. A first end (42) of the housing (40) carries a pre-slit septum (52). One form of a blunt cannula (98), usable with the injection site (34), carries a locking member (100). When the pre-slit injection site (34) slid

A pre-slit injection site (34) includes a housing (40) with a flow path therethrough. A first end (42) of the housing (40) carries a pre-slit septum (52). One form of a blunt cannula (98), usable with the injection site (34), carries a locking member (100). When the pre-slit injection site (34) slidably receives the blunt cannula (98), the locking member (100) latches to the injection site (34) and creates a mechanically coupled unit. Another form of the cannula (280) includes a tube having a tapered distal end region (298) and having elongate discharge slots (294) for reducing contact surface area and for directing the flow laterally out of the cannula. The cannula may also include a rounded lead post (330), an annular barb (394), and axially oriented grooves (268).

대표청구항 ▼

[ What is claimed is:] [1.] A blunt-ended cannula device for use with a pre-slit resealable injection site, said cannula device comprising:an elongated member with a fluid flow channel extending generally axially therewithin and through a distal end of said member;said elongated member being general

[ What is claimed is:] [1.] A blunt-ended cannula device for use with a pre-slit resealable injection site, said cannula device comprising:an elongated member with a fluid flow channel extending generally axially therewithin and through a distal end of said member;said elongated member being generally cylindrical along a substantial portion of its length and terminating in a generally tapered distal end portion having a blunt end edge, the distal end portion including an outer circumference along its length that gradually and uniformly decreases toward the blunt end edge and the distal end portion and being sufficiently tapered to allow the elongated member to penetrate the pre-slit injection site; anda substantially cylindrical sheath surrounding said elongated member and being at least coextensive with and spaced apart from said elongated member to protect said member from inadvertent touch contamination.