Patent ID: 8801663
Filing Date: 2014-08-12
Classification: A61M

Abstract:
1. A needle assembly comprising: a needle hub having a distal end attached to a proximal end of a needle having a shaft, a needle tip and a diametrical enlargement proximal of the needle tip; a displaceable protective member for the needle tip, the protective member disposed on the shaft of the needle and having an engaging section that engages the diametrical enlargement to prevent the protective member from being displaced beyond the needle tip in a needle protective position; wherein the protective member is surrounded by a tube having a locally reduced diameter by heat action at a proximal end portion of the tube such that the protective member is confined in the tube and spaced from a proximal end edge of the proximal end portion due to interference by the locally reduced diameter; and wherein in a ready position in which the protective member is spaced from the needle tip, the locally reduced diameter at the proximal end portion forms a stop to maintain a gap between the distal end of the needle hub and the protective member.