Connector with protection valve for medical infusion/transfusion lines and the like

Claim 1

A connector for medical infusion/transfusion lines and the like, comprising a tubular body having first and second ends between which an axial flow path is defined, said body having at said first end an inlet fitting to axially receive therein a fluid dispenser member, and having an outlet at said second end thereof; an annular valve seat provided in said fluid path between said inlet fitting and said outlet, on the side of said inlet fitting; a valve obturator including a resilient member housed within the body transversally to said fluid path, on the side of said outlet, and having a peripheral circumferential sealing edge normally co-operating under closing contact with said annular valve seat to hermetically isolate said inlet fitting from said outlet; and tubular push means axially slidable within the body on the side of said inlet fitting from a retracted position to an advanced position to elastically strain said valve obturator, following axial introduction of said fluid dispenser member into said inlet fitting, so as to move said circumferential edge of the valve obturator away from said annular valve seat and open thereby communication between said inlet fitting and said outlet, wherein: said valve obturator has a generally solid disk configuration, said connector body has an annular reaction surface juxtaposed and adjacent to said annular valve seat and against which said obturator disk bears on the side of said outlet, said tubular push means operate, in said advanced position, so as to press said obturator disk into said annular reaction surface thus elastically stretching said obturator disk in the axial direction towards said outlet, whereby said circumferential sealing edge of said obturator disk radially retracts moving away from said annular valve seat.