Tool for expanding the hole formed in the bone, in particular for installing an endosseous dental implant

Tool for expanding the hole formed in the bone, in particular for installing an endosseous dental implant
United States Patent Application 20040172035
Kind Code A1
Publication Date: September 2, 2004
Inventors: Parmigiani, Corrado Saverio; (Correggio, IT)
Correspondence Name and Address: BROWDY AND NEIMARK, P.L.L.C.
624 NINTH STREET, NW
SUITE 300
WASHINGTON
DC
20001-5303
US
Assignee Name and Adress: C.G.M. S.P.A.
CORREGGIO
IT
Serial No.: 778044
Series Code: 10
Filed: February 17, 2004
Abstract
The expansion tool comprises an expander body (10) having, for penetration into the hole, an at least partly tapered elongate rectilinear penetration portion of circular cross-section provided at least partly with a helical thread (12) for engaging the wall of the hole; the expansion tool is intended to be engaged by a drive means able to rotate it with torsion about its axis (A), and is characterized in that said expander body (10) is constructed of synthetic resin and is traversed by a rigid axial core (13) positioned in its interior along its axis, and to which the body (10) is bonded. An important advantage is that as the expander body is of synthetic resin, its manufacturing cost is relatively low to the point that the expander body can be disposed of after use. This means that the use of the tool is very hygienic and at the same time the need for laborious tool cleaning operations is eliminated.