The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 08, 2001
Filed:
May. 19, 2000
Teresa R. Hickok, Bonita, CA (US);
Clifford J. Ruddle, Santa Barbara, CA (US);
Other;
Abstract
An instrument removal tool includes a hollow tube defining a lumen having a bottom end, a top end, and a cutout spaced from the bottom end; the hollow tube having an outer diameter sized to be received in the root canal, an inner diameter sized to admit an instrument into the lumen, and a wall width at the bottom of the tube sized to allow the bottom end of the hollow tube to pass over the top of the instrument such that at least the top of the instrument is received in the lumen of the tube, and an elongated shaft sized to be received in the hollow tube from the top end of the tube; the shaft having a length sufficient to extend beyond the cutout in the hollow tube, the shaft having a bottom end and a top end; the bottom end of said shaft being tapered and having a rounded end to urge a top end of the instrument into the cutout; the shaft and tube cooperating to grasp the instrument.