VERTICAL CANNULA

摘要

A cannula device (20) including a base portion including a first pressure application surface structure (21) to engage the skin surface adjacent a patient's vein; a recessed surface (2) surrounding the skin surface above a patient's vein; a base aperture interconnecting a top surface of the base portion with the recessed surface a top portion slidably mounted in the aperture including a cannula needle (4) slidable from a fist position recessed in the aperture to a second position protruding from the aperture into a patient's vein.