Pen needle apparatus

A pen needle comprising:

• a collar having a side wall, an open proximal end having a coupling configured for coupling to a delivery device, and a distal end with a central opening;
• a needle hub having a proximal end and a distal end, said proximal end of said needle hub having a coupling member coupled to said distal end of said collar where said needle hub is rotatable independently of said collar about a longitudinal axis of said pen needle;
• a needle extending from said distal end of said needle hub;
• and
• a projection having a lumen receiving said needle and extending from said proximal end of said needle hub, said projection configured for piercing a septum of the delivery device and having an opening providing fluid communication between the delivery device and said needle wherein said projection is a spike integrally formed with said needle hub and extends axially from said proximal end of said needle hub.

A pen needle comprising:

• a collar having a side wall, an open proximal end having a coupling configured for coupling to a delivery device, and a distal end with a central opening;
• a needle hub having a proximal end and a distal end, said proximal end of said needle hub having a coupling member coupled to said distal end of said collar where said needle hub is rotatable independently of said collar about a longitudinal axis of said pen needle;
• a needle extending from said distal end of said needle hub;
• and
• a projection having a lumen receiving said needle and extending from said proximal end of said needle hub, said projection configured for piercing a septum of the delivery device and having an opening providing fluid communication between the delivery device and said needle,
• wherein said needle hub has a side wall with an outwardly extending flange at said proximal end of said needle hub, and at least one outwardly extending tab spaced from said flange, and where said distal end of said collar is captured between said flange and said at least one tab to couple said needle hub to said collar, where said collar is rotatable relative to said needle hub.