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:
Mar. 14, 1989
Filed:
Apr. 20, 1987
Calvin Griggs, Memphis, TN (US);
J C Horn, Memphis, TN (US);
Treace Medical, Inc., Memphis, TN (US);
Abstract
A surgical drill is disclosed which includes an electric motor and an elongate tubular support sleeve. A drill bur is mounted so as to extend through the support sleeve and extend outwardly from the free end thereof, and the bur includes a shaft which mounts a plastic sleeve bearing for relative rotation therewith. The bearing contacts the internal bore of the support sleeve, so as to provide a seal therebetween which prevents the passage of debris past the bearing and into the support sleeve. Also, a portion of the plastic sleeve bearing is visible during use, and the bearing includes a distinctive color which is correlated to the particular configuration or size of the cutting tip of the bur, to thereby facilitate its identification during use of the drill.