Patent ID: 6045564
Filing Date: 2000-04-04
Classification: A61B,B25F

Abstract:
An attachment for connection to a surgical handpiece, said attachment including:an attachment housing, said attachment housing defining a center space for fitting said attachment housing over the surgical handpiece and said attachment housing having a base positioned to be located against the surgical handpiece and a plurality of teeth positioned to engage the surgical handpiece so as to hold said attachment housing static relative to said surgical handpiece; anda cylindrical shaft rotatingly fitted to said attachment housing so as to extend through said center space of said attachment housing and into the handpiece, said shaft having a diameter and an axis and being further shaped to have a locking section integrally formed therewith, said lock ring being shaped to have a plurality of planar faces so as that said locking section has a polygonal cross section profile that has a diameter less than said diameter of said shaft wherein said faces forming said locking section meet at corners and said locking section is further shaped so that at least two corners are spaced a first distance from the axis of the shaft and at least one corner spaced a second distance from the axis of the shaft.