Anyone have experience modeling lancet cannulas?

Hello everyone.  I'm trying to accurately model a lancet style cannula (medical needle), and I'm not sure if I'm doing it correctly.  I've got a model that seems to work just fine, but I'd like to compare against somebody else's work since this is the first time I've modeled one.  I based my modeling steps on the details provided in the link below:

https://books.google.com/books?id=cK9PCwAAQBAJ&lpg=PA220&vq=lancet&pg=PA218#v=snippet&q=lancet&f=false

If anyone has a lancet cannula model they can share, or critiques of my approach to modeling it, I'd appreciate the feedback.

Thanks,

Adam Hartman

SolidworksParts And Features