NEEDLE TIP PROTECTOR ASSEMBLY FOR SAFETY IV CATHETER ASSEMBLY

摘要

The invention relates a safety IV catheter assembly comprising a catheter tube having a distal end and a proximal end; a catheter hub having a distal end and a proximal end; a needle extending through the catheter hub and the catheter tube having opposite proximal and distal ends defining an axial direction A, wherein the proximal end is joined to the needle hub and the distal end forms a needle tip and a change in profile is provided between the proximal and distal ends of the needle; and a tip protector assembly being arranged movably on the needle in-between the catheter hub and needle hub outside the catheter hub in an arrangement engaging with one or more second locking means provided on the catheter hub in its ready position, wherein the first arm is deflected radially outwards by the needle against a restoring force, wherein the tip protector assembly is configured to entrap the needle tip upon withdrawal of the needle from the catheter hub.

主权项

1. A safety IV catheter assembly comprising:
a catheter tube having a distal end and a proximal end; a catheter hub having a distal end and a proximal end; a needle extending through the catheter hub and the catheter tube having opposite proximal and distal ends defining an axial direction A, wherein the proximal end is joined to the needle hub and the distal end forms a needle tip and a change in profile is provided between the proximal and distal ends of the needle; a tip protector assembly being arranged movably on the needle in-between the catheter hub and needle hub including: a base portion having a needle passage extending in the axial direction A from the proximal end of the base portion to a distal side of the base portion; a hollow enclosure formed by the extension of the base portion in a direction generally parallel to the axial direction A; wherein the distal end of the hollow enclosure has a substantially circular opening allowing the needle to pass there-through; first and second arms made integrally within the said hollow enclosure and extending from the distal side of the base portion in an axial direction A, wherein the region between the first and second arms and the hollow enclosure defines open space; at least one tension creating element surrounding partially and/or completely the said first and second arms in a region proximal to the distal ends thereof; at least one stopper element arranged in the base portion having an axial bore with a dimension adapted to the principal outer profile of the said needle; and one or more first locking means to lockingly arrange the tip protector assembly outside the catheter hub in an arrangement engaging with one or more second locking means provided on the catheter hub in its ready position, wherein the first arm is deflected radially outwards by the needle against a restoring force.