Jansen Bone Curette - StraightDDP Elite USA Jansen Bone Curette is a unique instrument that is designed to scrape away portions of bone. This can be useful in procedures that require removal or a tumor or some kind of unwanted growth. Additionally this can be used when it is necessary to remove a small portion of something to sample for testing. This curette is also double ended and available either in straight or angled profile. This makes it exceptionally useful in a variety of