SCREW-TYPE DENTAL IMPLANT ANCHOR - Dental Patent Articles

SCREW-TYPE DENTAL IMPLANT ANCHOR
Canadian intellectual Property Patent Database
CA Patent Number: CA 1289782
Application Number: 554360
Publication Date: Oct. 1 , 1991
Inventors (Country): NIZNICK, GERALD A. (United States)
Owners (Country): CORE-VENT CORPORATION (United States)
Applicants (Country): NIZNICK, GERALD A. (United States)
Agent: BORDEN LADNER GERVAIS LLP
Issued: Oct. 1 , 1991
Filed: Dec. 15, 1987
Open to Public Inspection:
Canadian Class (CPC): 83/25
International Class (IPC): A61C 8/00

Abstract:
A screw-type dental implant anchor includes an externally-threaded body portion having internal structure for engaging an insertion tool. The body portion can be joined to a top portion having an unthreaded exterior wall. This internal structure is inside a top portion or inside the body portion of the anchor, The top portion is open, preferably chamfered at its upper end, and in registration with an internally-threaded shaft inside the body portion of the anchor that extends from a plane just below the head portion downwardly a substantial distance inside the body portion. The distal end of the anchor includes a through hole extending from one side of the body portion to the other, and an opening at the bottom of the body portion extending upwardly inside the body portion a distance sufficient to permit bone and associated tissue to grow into and through these openings and to permit blood tissue to escape.