Patent ID: 8152790

Claim:
A connector for medical use comprising: an adapter equipped at its centre with a needle extending from a first chamber into a second chamber and terminating in a terminal portion of said second chamber, said terminal portion having a cross section suitable for receiving, by friction, a luer type male connector at least in a terminal part of the needle including at least one orifice thereof being encased in a cavity of an elastic seal having, in the thickness of its free end, a slit or equivalent, the elastic seal having a free end at a tangent to a terminal end of the second chamber, said terminal end being at a longitudinal endpoint of said second chamber opposite said first chamber, relative to a longitudinal dimension of said second chamber; a ring encircling a terminal part of said seal at least as far as a zone opposite the at least one orifice of the needle, said ring extending from said terminal end of the second chamber to said first chamber and the ring located inside the second chamber; and wherein along a part of a length of the terminal portion of the chamber, at least one of the outer surface of the elastic seal and the inner surface or thickness of the ring has at least one recess for promoting the expulsion of a material portion of the seal into said recess, at a time of passage of the needle.