Patent ID: 6203529
Filing Date: 2001-03-20
Classification: A61M

Abstract:
A needle arrangement for an injection device (16),having a hollow needle carrier (10) on which a hollow needle (12) is mounted and which is configured for mounting on an injection device (16);having a first cap (32) which is arranged on the hollow needle carrier (10) and is displaceable approximately parallel to the longitudinal extension of the hollow needle (12) between a distal and a proximal end position, is formed at its proximal end segment with a passthrough opening (42) for the hollow needle (12), and in its proximal end position substantially conceals the hollow needle (12);having a compression spring (26), arranged between the hollow needle carrier (10) and the first cap (32), for displacing the first cap (32) into its proximal end position;having a second cap (66) adapted to surround said displaceable first cap (32), said hollow needle (12) and said hollow needle carrier (18), and having a user-removable protective barrier (71) closing off an open side of said second cap, whereby said second cap (66) and said protective barrier together form a sterile enclosure around said first cap (32), said hollow needle (12) and said needle carrier (10).